Tuesday, December 31, 2019

Analysis Of Kathryn Stockett s The Great Gatsby

Before the civil rights period, the South, while more prejudiced than the North, was in one way more open-minded: blacks and whites cohabited with an informal and durable routine. They’d been living interweaved existences since the days of servitude. The Help is an emotionally all-encompassing, version of Kathryn Stockett’s influential 2009 novel, it comprehends that the rift between the races in the South was just one illusion after another. The film is set in Jackson, Miss. — The middle-class of the Deep South —The Help is Abilene’s and Minny (Octavia Spencer) life stories, and Minny is the housekeeper and cook who’s as hearty and disapproving as Aibileen is guarded. Davis and Spencer are both wonderful, reliving these women’s optimists and shattered dreams with every line, and amongst the lines, too. The film is also about their friends, and about the ladies they work for a wealthy group housewives who are the country club and tea l unches Stepford wives types In the beginning, Aibileen Clark (Viola Davis), grave and firm, with a look so expressionless it takes you a minute to see the quiet objection in her eyes. It shows us that she is following in her mother’s footsteps as a maid And that her grandmother was a slave to the house. She tells us it is 1961, and she is also a house slave. They just call it by a different name, a maid. She also informs us that she has reared 17 white children, insinuating the she is more than just a maid. Skeeter is a fresh and young white

Monday, December 23, 2019

The Definition Of Your Demise, Stress - 1346 Words

The Definition Of Your Demise, Stress By N. Anglin | Submitted On March 22, 2014 Recommend Article Article Comments Print Article Share this article on Facebook Share this article on Twitter Share this article on Google+ Share this article on Linkedin Share this article on StumbleUpon Share this article on Delicious Share this article on Digg Share this article on Reddit Share this article on Pinterest Expert Author N. Anglin Stress is like a nagging sister. Disclaimer: not saying I have one of these or anything. She pulls our hair, pokes us when we re concentrating, and to reflect a bit, embarrassed us when we brought a new date home in high school. The effects stress has on you both mentally and physically is killing you. A day in the not so distant past, I was a part of the re-stocking initiative (sound fancy?) to replace the wheels and brakes for an A320. This project was a little shy of $100,000 and had several risky obstacles to stay on budget. One of these obstacles was dealing with a new third party to handle repairs. If you know me, any new third party makes me sweat. With no history, we had no true knowledge of how they did things. It was a gamble. 2 weeks pass with several updates along the way. On the 14th day of the second week we called to check up on things, you know, the nosy in your face check up. They claimed that our account manager was fired and they never received our purchase order. I about blew a gasket. They went on to tell ourShow MoreRelatedExamples Of Everyday Tragedy732 Words   |  3 Pagestalking about a common salesman who is trying to make his family happy. Eventually, the actions of the salesman led him to his fate. By this example, we can see that Miller shows us that tragedy can happen to anyone in this world, showing us his definition of tragedy in the common man. In the story Death of a Salesman, we are introduced to a salesman trying to make it up to the top of the food chain in the world. We then learn about his family and how hard he is trying to support them. The hero inRead MoreThe Role of Fate in Macbeth1245 Words   |  5 Pagesevents. Destiny’s definition suggests that events will occur and do not change. Whatever unravels in life cannot change by mankind. The statement has undivulged meanings; fate has the opportunity to change if the person wants events to end differently. However, wrong decisions will only seal fate. In Shakespeare’s Macbeth, The fate becomes confirmed through Lady Macbeth wanting more power, Macbeth’s inner conflict, and the three witches tricking Macbeth and leading him to his demise. The witches giveRead MoreDivorce And Its Effects On Social Life1627 Words   |  7 Pagesthrough the process. In the pages that follow, this paper will discuss both mental and physical challenges that marriages encounter and try to ascertain whether or not these strained marriages should be given a chance a recovery. Based on the definition obtained from ppsychologytoday.com Marriage is the process by which two people make their relationship public, official and permanent. It is the joining of two people in a bond that based on the vows taken are supposed to last until death, but inRead MoreThe Classification Of Water Imagery Present Throughout Shakespeare s Macbeth Essay1134 Words   |  5 Pagesâ€Å"atmosphere† or the permeating tone or mood of a play (3). However, this attitude between images and atmosphere creates an environment where different definitions of images contribute to different interpretations of the subjective atmosphere that is born out of each individual reader’s perception of the play. Because of this discrepancy, a strict definition of the term â€Å"image† should be observed. The term â€Å"image† will refer to physical objects or actions that are used by Shakespeare to clarify broad themesRead MoreThe Sacred Bond of Divorce. An Analysis of Wh at Marriage Has Become1562 Words   |  7 Pagesalready have a predetermined path. Some people would argue that God has a reason for putting you on this earth, and others would say you’re a product of your upbringing and environment, others say it’s all in the genes. Some parents have their child’s path planned out straight through college. But is that where life ends? Once you’re done with college is your journey over? We are human, animals to put it simply. Since the dawn of time we have been looking for companionship, for another â€Å"soul† that is intertwinedRead MoreIntroduction: . I.Imaging Being Sick For Many Years, Trying1469 Words   |  6 PagesIntroduction: I. Imaging being sick for many years, trying every new treatment but nothing works. Your bills are piling up, your family is getting restless and your pain is not subsiding; only increasing rapidly. If you were given the choice to end your life, would you do it? II. 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Miller presents Willy as having a ‘what goes around comes around’Read MoreThe Business Roundtable Institute For Corporate Ethics1572 Words   |  7 PagesThey were also found that they were part of the League of Conservation Voters which have strong views against clean energy and conservation. Waste Management also isn’t as â€Å"environmentally friendly† as they advertise. In their advertisements, the stress and emphasize the importance of trees they save, the land they have for wildlife, and also how much energy they generate through incineration. What they didn’t tell, is that all of this doesn’t come without a pretty hefty price. The incinerators wereRead MoreOrganizational Behavior- Conflict Management1567 Words   |  7 PagesTo Study the positive aspect of organizational conflicts What is organizational conflict? A basic definition of organizational conflict is disagreement by individuals or groups within the organization, which can center on factors ranging from resource allocation and divisions of responsibility to the overall direction of the organization. Four types of conflict in organizations. Definition of Responsibility Unclear. When it is unclear who is responsible for what area of a project or taskRead MorePhysician Assisted Suicide Essay1214 Words   |  5 Pagesp. 116). stress that dignity and integrity are very personal matters; it is probable that being dependent on others to perform basic activities of daily living threaten a patient’s dignity and thus determine when an explicit request for PAS is made. Perhaps to deny someone the ability to limit their suffering is cruel. My main argument in support of PAS bears the concept that every capable human being has the right to decide on the way he or should wants to live. This very definition of right of

Sunday, December 15, 2019

Natural Based Insecticides Free Essays

In addition to polluting the environment and disturbing the food chain, a worrying issue with repeated use of the same insecticide over a period of time is development of resistance power by the household insects. Consequently, we are left with more resistant pests and insects to deal with. To reduce these negative outcomes, a perfect solution is to learn organic insecticide recipe, which you can try out at home with readily available supplies. We will write a custom essay sample on Natural Based Insecticides or any similar topic only for you Order Now The following info is all about homemade insecticide recipe for your reference.Natural Insecticide # 1: Garlic Spray For natural insect repellent recipe with garlic, chop garlic cloves (3 ounces) and soak the pieces in mineral oil (2 tablespoons) for one night. For added effectiveness, stir in fish emulsion (1 teaspoon) in the garlic mixture. Strain the liquid part and store it in an airtight glass container. While using, dilute one part of this natural insect repellent with 20 parts water and spray to the plants. Natural Insecticide # 2: Tomato Leaf ExtractTomato leaf is excellent for controlling insect and pest infestations in flowering plants. For this natural pest control recipe, you will need leaves of a mature tomato plant, 4 pints water and 1 teaspoon cornstarch. First, blend the tomato leaves in a mixer and stir the extract with cornstarch and water. Using a sprayer, apply this mixture to rose and other flowering plants. Natural Insecticide # 3: Saline Water If you notice spider mites and cabbage worms, the best to use natural insecticide for vegetable garden is salt water.Prepare a natural insecticide recipe by dissolving 4 tablespoons salt in 2 gallons of water. Apply this saline solution to kill the said garden pests. Salt is also commonly used in natural herbicide recipe, but remember that applying a highly concentrated salt solution will negatively affect the soil condition in the area. Natural Insecticide # 4: Neem Oil Neem (Azadirachta indica) possesses natural pest repellent properties, thus serving as an excellent ingredient for killing insects. Nothing can beat the effectiveness of neem oil and neem spray in controlling troublesome garden pests. As you apply neem oil to plants, the insects suck the oil and die. Thus, neem oil serves as a systemic poison for the insects. Natural Insecticide # 5: Hot Pepper and Garlic For hot flavored natural insecticide recipe, combine together 1 quart water, 1 teaspoon of hot pepper sauce and 4 garlic cloves in a bowl. Blend it for 2 – 3 minutes and strain by using a cheesecloth. Apply this hot pepper spray to get rid of caterpillars, aphids and whiteflies.You can refrigerate leftover mixture in an airtight container for future application. Natural Insecticide # 6: Diatomaceous Earth A safe natural insecticide is diatomaceous earth, a white powder derived from diatoms. Sprinkle this powder in the soil to reduce slugs, whiteflies, aphids and other soft bodied insects. Another effectual fungicide and insecticide is boric acid, which is soluble in water. Make a dilute solution of boric acid and water, and use it for treating fungus, as well as ants, fleas, ticks and termites.Refer to natural insecticide for ants for achieving an ant free garden. If you do not have time to go through the making directions of natural insecticide recipe, simply place shallow bowls with beer near the plants. This will attract slugs and snails, thus preventing them from affecting your garden vegetables and flowers. For long-term protection of plants from flea-beetle, you can grow mint and onion in the vegetable garden. Likewise, you can control pests and insects effectually in a natural way, without using chemical products. How to cite Natural Based Insecticides, Papers

Saturday, December 7, 2019

Exploring Research Methodologies Positivism and I Essay Example For Students

Exploring Research Methodologies: Positivism and I Essay nterpretivismExploring Research Methodologies: Positivism and InterpretivismBefore a researcher can initiate a research project, they face the confusion and the range of theoretical perspectives, methodologies, methods, and the philosophical basis that encompasses them all. This seemingly meticulous structure for the research process is in fact aimed toward providing the researcher with a scaffolding, or a direction which they can go on to develop themselves to coincide with their particular research purposes. (Crotty, 1998)Once a researcher has developed a research question they are seeking to answer, they must consider what methodologies and methods they will employ in the research; what theoretical perspective lies behind the methodology; and what epistemology informs this theoretical perspective. (Crotty, 1998) Before continuing it is important to explain these key terms:Epistemology is the branch of philosophy concerned with the theory of knowledge, which seeks to inform us how we can know the world. (Jary and Jary: Dictionary of Sociology, 1991) In the context of social research, epistemology is the form of proof one requires to justify a claim to knowledge about the social world. This will have a salient impact on the kind of data one can collect in order to validate their arguments concerning the social world (methodology), as well as the methods one considers in collecting valid data (methods). A researchers choice of methods will be conditioned by theoretical perspectives, the way one sees the social world. (Livesey)Researchers of social science use a wide variety of research methods to gain and enhance knowledge and theory. The different types of research methodologies, quantitative and qualitative, are associated with the epistemological and theoretical perspectives the researcher wishes to adopt. This choice the researcher makes determines the way in which research should be conducted. This paper will discuss, critically analyse and compare the epi stemological and theoretical perspectives of two research methodologies used for social research: positivism and interpretivism. The various research methods used within the frameworks of each of these will then be discussed. PositivismThere are two main types of epistemologies: positivist and anti-positivist. Positivist research is an approach which combines a deductive approach with precise measurement of quantitative data to enable the discovery and confirmation of casual laws to predict human behaviour. (Neuman, 2000) In the social sciences, the criteria positivism as a theoretical perspective shapes reality to be objective: free of bias, opinion or prejudice; and that there is one reality in nature, one truth. The principle purposes of social research, in a positivist approach, are to explain social life and predict the course of events. Positivism has received a great deal of criticism for use as a social research methodology as quantitative methods can be argued as unsuitable for research of human beings. The individual is relegated to being nothing more than a system outcome, not a thinking and acting human. (Kelly ; Charlton, 1995)Quantitative methods use numerical data, facts and universal laws to perform research. These methods of science used to study the natural world, are arguably impossible for the study of human affairs. Epistemological dimension of positivism understands human behaviour as patterned, orderly and relatively stable. Therefore, methodologically, a positivist will use objective methods to collect data about human behaviour. While the positivist tradition is perhaps one of the least appropriate approaches to the social world it is, paradoxically, one of the most commonly employed.(Lawson, 1997)There are divisions of opinion amongst sociologists about the extent to which sociology is capable of producing objective understanding of life. The positivist concept is that the principles of science can be applied to the study of people. Therein lies the main question a researcher must consider: Can sociology, or any form of social science, be considered to be scientific?the principle legacy of positivism today is an enduring belief in the dichotomy between objective knowledge and subjective opinion. (Buchanan, 1998)Positivist, or quantitative methods used for social research, trying to be systematic, objective and precise, are criticized as being flawed for excluding too much that needs to be included; such as failing to take account of essential characteristics of human behaviour and social life, which cannot be measured, or predicted using numbers or universal laws. Furthermore, natural sciences attempt to quantify the phenomena or experience and reproduce the results

Friday, November 29, 2019

Introduced Species and Biodiversity

Introduction Biodiversity refers to the sum total of species, ecosystems and genes in a certain location. The term encompasses all spheres of biological systems such as the genetic or molecular sphere, the population sphere, the species, ecosystem and organ spheres, as well. Conversely, an introduced species is one that exists in an area outside of its native region. Usually, humans may bring them into a certain location either intentionally or accidentally.Advertising We will write a custom essay sample on Introduced Species and Biodiversity specifically for you for only $16.05 $11/page Learn More Sometimes introduced species may turn invasive and thus cause harm to the native population. The question of introduced species’ effects on biodiversity is a complex one as there is no single consequence of these organisms. Consequently, one must analyse both sides of the debate thoroughly before one can assert that introduced species either are harmful to biodiversity. How introduced species harm biodiversity Conservationists are deeply concerned about introduced species because they threaten the existence of native species. At times, this may occur through direct interactions with the introduced species or through the dependence of other species on the threatened one. When other species depend on the replaced one, then they may loose their habitat, source of food, or mode of reproduction. Eventually, they may also become extinct or endangered. The danger posed by introduced species may occur through various pathways: competition, predation or parasitism, disease, hybridisation, modification of the habitat as well as herbivory. When these phenomena manifest, then they eventually lead to the loss of biodiversity. Studies indicate that introduced species come second to habitat destruction with regard to their threat on native biodiversity. Usually, certain barriers exist in natural environments to allow species to evolve on their o wn. Few of these barriers include mountains, deserts, rivers and ocean. If these barriers did not exist, then it would be quite easy for species to enter new niches and minimise biodiversity in that area. Human beings have contributed adversely to circumvention of these barriers by bringing species, from other areas, for food or commercial purposes. Introduction of species, therefore, accelerates the amount of time needed to broaden a species’ range (Cohen Carlton 1998). The most direct and serious way of reducing biodiversity by introduced species is competition. Non native populations will compete for the same space, nutrients, polluting insects or light as the native ones. In certain circumstances, the introduced species may be better equipped to fight for these resources than the local ones thus outcompeting them. This may lead to the decline of species in such locations. One scenario was the Australian paperback tree, which invaded the US in Florida. The tree had a spon gy bark and flammable leaves that made it better able to utilise resources in its foreign location; this caused adverse competition for numerous native plants. As the Australian paperback kept spreading, more local plants kept reducing. Even other mammals and birds that had adapted to the native plants started declining.Advertising Looking for essay on biology? Let's see if we can help you! Get your first paper with 15% OFF Learn More Therefore, competition causes biodiversity loss by eliminating organisms that directly compete with the invasive species, and reducing the ones that depend on the first variety. Other examples of introduced plants that have outcompeted local ones include the Australian Caulerpa, which steeled in the Mediterranean Sea, as well as the South American water hyacinth. The North American gray squirrel, which came from Italy and Britain, has a better way of getting nuts than local ones. These indigenous squirrels have less access to resources an d thus fewer chances of survival (Moritz 1999). Sometimes introduced species can become predators or parasites on native populations. These organisms may be too strong for the local ones thus perpetuating their extinction. One such instance was the case of the pacific black rat. It was introduced into Hawaii and attacked the eggs of honeycreepers, which were local Hawaiian birds (Johnson 2003). In fact, several bird species that live in islands have no way of protecting themselves against introduced hunters like the Pacific black rat. The brown tree snake is also a commonly cited example. This species emanated from Admiralty Islands, and was responsible for the eradication of 11 bird types in Guam. The Nile perch has predated upon cichlid fish in East Africa’s Lake Victoria. Approximately 100 species of these organisms have disappeared as a direct result of the Nile Perch’s predatory activities. An example of how introduced species can become parasites is the case of t he Asian chestnut fungus. This species used American chestnut trees as hosts and eventually led to their elimination from most parts of eastern US. Approximately 180 million acres of land lost this species biodiversity. Additionally, almost a dozen moth species depended on the American chestnut trees, so they also became extinct or endangered. Certain introduced species can breed with native organisms and alter the gene pool in the species. Hybridisation affects indigenous populations by creating an offspring that is better adapted to its environment than the local one. As such, the introduced species as well as the hybrid displace the local species into extinction because they have a genetic advantage.Advertising We will write a custom essay sample on Introduced Species and Biodiversity specifically for you for only $16.05 $11/page Learn More This form of invasion occurs over a relatively long period of time thus making them seem less dangerous. Rhymer and Simberloff (1996) explain that the seriousness of the phenomenon may not be very evident from direct observation of the morphological traits of the species. Therefore, the scientists used molecular technology in order to study the extent of hybridisation among various species. They argued that gene flow occurs naturally in various settings. However, when hybridisation takes place, then more genes are lost, and at a faster rate than in cases where no introduced species exist. Such foreign species threaten rare species particularly because their gene pools are delicate. This is a process called genetic pollution; other experts called it genetic erosion. When human beings manipulate organisms’ genes for increased yields in agriculture, they eventually, make wild and domestic varieties less common (Wilson 1992). Genetic erosion is a danger to environmental diversity because it minimises the prevalence of rare genotypes. The native Hawaiian duck is adversely affected by intro duced species such as mallards because it has bred with them. Now the duck’s gene pool is bearing more resemblance to the invader; in other words, it has evolved. Another case was hybridisation of the Texas fish with genes from the mosquito fish. Now the Texas fish is regarded as an extinct species whose contribution to biodiversity in the area has been undermined (Naylor et al. 2001). Even the Gula and Apache trout have hybridized with several species in their areas of introduction. In Europe, the white-headed duck has become an endangered species because of hybridisation with the ruddy duck from North America. The white-headed duck is regarded as one of the rarest ducks in the world, yet the ruddy duck’s continual expansions into Europe ruined this (Eildredge 1998). Introduced species can modify habitats as well. They often make their new environments unfavourable to indigenous species, which struggle to adapt and eventually die out. One classic case is the zebra mus sel; the organism had a way of filtering large quantities of water that led to the reduction of planktons in the water. Additionally, because the zebra mussel spreads so quickly, it became so difficult for indigenous populations to survive in these environments. Almost thirty species of freshwater species face extinction in areas inhabited by the zebra mussel. The introduction of Prunus spinosa into Western Europe has substantially altered habitats for the Thecla betulae butterfly. The introduced species came from Eastern Europe, and leafs much faster than the local plants. Not only did the Prunus spinosa endanger the local plants, but also modified the indigenous butterfly’s habitat thus threatening its contribution to biodiversity too (Pimentel et al. 1999).Advertising Looking for essay on biology? Let's see if we can help you! Get your first paper with 15% OFF Learn More Non native species can also spread diseases that harm indigenous populations. A typical scenario was the introduction of a European parasite that led to the prevalence of whirling disease among rainbow trout in the US, Pennsylvania. They disease spread to other regions of the country and diminished rainbow trout in most parts. On occasion, introduced species may not be parasitic or predatory; they may be herbivorous. In this regard, these animals will consume native plant species and thus lead to their elimination. Although many individuals rarely think about these particular animals, the goat has been one of the most threatening organisms to native plant species. When goats came to the Atlantic Island during the 16th century, they ate plenty of local plant species. As a result, 50% of these organisms were lost. Perhaps it is the beneficiary effects of the goats to the human being that make it appear non invasive. However, when one studies this issue from the perspective of the plan t species, then one realises that herbivory can indeed be detrimental to biodiversity (Spicer 2006). How introduced species may not harm biodiversity Bartomeus et al. (2008) carried out research on the effects of invasive plants on the pollinating patterns of the population. Their results contradicted what most conservationists say about introduced species. The scientists found that it was not just the invading population that benefitted, but the local population, as well. Invasive plants may sometimes increase the number of pollinating agents that visit a particular ecosystem. The agents under consideration in this research were insects. It was affirmed that, unlike what floral market analysts claim, more insects increased in that population. Since the introduction of foreign plants in the area of study did not occur in a simple manner, then it was necessary to analyse the competition structure of the respective ecosystem. In this analysis, there were two invasive plants: the prick ly pear type called Opuntia stricata and the balsam or Carpobrotus affine acinaciformis. They both have very attractive flowers that attract more insects than the native populations. Furthermore, because those flowers are also rich in pollen, then more pollinating agents can visit them. The prickly pear type received 30.9% visits from insects while the balsam received 43.4%. The researchers concluded that whenever pollinating resources increase in a community of plants, then more insects will visit the area. Approximately 23 pollinating insects visited the Carpobrotus. Unlike the other invading species, which was an exclusive feeder, this particular insect visited other plant types, including the local ones. Balsma plants can alter reproduction processes in native species because they change reproduction patters in these new areas. Local plants have a better chance of increasing their population when such species enter their niches. This study indicates that not all invasive species are detrimental to the existence of local populations. Some of them can increase the rate at which indigenous organisms reproduce and exist. Some introduced species can also fight pollution when the concerned location becomes unfavourable for other organisms; the Asian oyster is one such example. When introduced into water bodies, it was able to filter out more water pollutants than the native oysters. This was quite beneficial because the water quality in Chesapeake Bay, US had deteriorated adversely. The oyster made the water more habitable for other species by minimising pollution. Even the notorious zebra mussel has some positive effects on water quality. Studies illustrate that water clarity has increase by five or six times in Lake Erie, where the zebra mussel exists. Greater water clarity has emanated from the zebra mussel’s feeding habits; it consumes fertiliser runoff as well as algae. As a result, more light penetrates into the lake thus providing the underground p lants with access to ultraviolet rays needed for survival. Therefore, microphyte beds have returned to the lake in times when they had previously been missing. Part of the reason for their scarcity was the pollution in the lake. The microphyte beds also provide new species of fish with nurseries, which nurture their re-emergence. In line with the above argument is the issue of modifying environment in favour of local populations. The common gorse came into New Zealand from Scotland. It easily adapted to its environment, and fitted in well with the rest of the population. However, it threatened many native plants through competition. In the long run, after eradicating some native plant species, it started providing nurseries for their reestablishment. Introduced species may not necessarily lead to the minimisation of biodiversity if other species enter the ecosystems too (Newcomb 2001). In this regard, when local species are destroyed, then other species may come in to fill the void. This interchange of species can sometimes lead to a greater level of biodiversity in some areas than had existed prior to the extinction of certain species. Nonetheless, the occurrence of this phenomenon has not been explored in as much detail as the reverse phenomenon; that it, extinction of species. In fact some individuals argue that researchers have a tendency to stop at the immediate losses that occur in a certain location. Many of them do not look into the long term implications of invasive species on diversity. Sometimes a certain population may be burdened by invasive species. Consequently, humans may introduce other species as a means of biological control. Here, introduced species may remedy the effects of other harmful species in the area. One such instance is the use of the South American caterpillar moth to control prickly pear cactus in Australia. The latter species came from the Americas, and invaded numerous Australian lands. They seriously affected the ability of l ocal plants to grow and thrive in these locations. It was necessary to introduce an enemy to the invasive species in order to restore biodiversity in the area. An example of such an experiment was the alligator weed in the US, which had come from South America. The weed was a danger to aquatic diversity in the state of Florida owing to its high rate of expansions. Scientists introduced the alligator weed flea beetle to control this population. As a result, the population of the weed radically reduced, and this enhanced biodiversity for other organisms that had been crowded out (Wiedenmann 2000). Nonetheless, for biological control to work, then the natural enemy of the invasive species needs to have a high degree of specificity. The conservationists must do a thorough research of the exclusivity of the species under consideration (Geerat 1991). If it is a general feeder, then it may become dangerous to the local population. The cane toad in Australia was one such example; it was int roduced in the continent as a method of biological control against the Greyback and French cane beetle. Unfortunately, the parties responsible for it did not know that it would feed on other insects in the area. They did not predict that the cane toad would also threaten other local frogs through competition and disease introduction. A number of other carnivorous animals also died from the poison in the cane toads’ parotid glands. The population of tiger snakes, crocodiles, quolls and dogs reduced dramatically when they ate this amphibian. A domino effect can occur when a biological agent’s full effect on the ecosystem s not well understood. Another scenario of biological control gone wrong is the Rhinocyllus conicus. This weevil was supposed to minimise the Canadian and Musk thistles. The latter introduced species had threatened local plant species extensively. The weevil turned on native plants that were an important source of food to local insects. Consequently, not only did the local plants face the threat of extinction, but so did other insects that depended on the thistles. Eventually, this has a negative effect on the biodiversity of the place. Introduced species can also improve biodiversity in an area when they are brought for conservation purposes. In such scenarios, a species may be in danger of extinction. Therefore, environmentalists may take it upon themselves to introduce those new species to the same locations that they existed before. Although introduction of the invasive species may have caused the problem in the past, it can also contribute to the prevalence of a higher native population of species. Cases of native restoration include the introduction of the Red Kite in Scotland and England. Wolves were also introduced in Yellowstone National Park within the US after their numbers were reduced dramatically. Additionally, some individuals take it upon themselves to plant trees in their personal properties that match the local po pulation. Reintroducing endangered species works by expanding the gene pool of threatened animals. Many of these genes may be highly concentrated in one area but not prevalent in another. It thus becomes necessary to translocate them to the depleted gene pool in order to restore their numbers. In other instances, the elimination of introduced species may be more of a political battle than an environmental one. In this case, it mirrors xenophobia or ethnic hatred. The attitude towards all things foreign is sometimes transplanted in botany or other areas of nature conservation. Well known writers, such as Nellie Doubleday, have reflected these ideologies in their writings about natural landscapes. He asserted that American plant life needed to reflect the racial temperament of the country. Therefore, styles of gardening inevitably demonstrate this perspective. Another landscaper called Jens Jensen explained that the landscape environment he was creating needed to reflect the racial tr aits of the US. They needed to be devoid of non American influences such a Latin or Oriental mixes. He claimed that plant types that borrowed from these influences were ruining the American character. Furthermore, he added that Latin elements were always spoilers (Simberloff 2003). While such attitudes were quite strong in the early twentieth century, their influences still exist today. Journalists, researchers and other stakeholders appear to be interested in causing mass hysteria regarding introduced species. For instance algae may be described as ‘killer algae’ while rats may be called ‘giants’. All these words create fear in the masses and propel the government to make laws that support xenophobic tendencies (Gobster 2005). Sometimes the focus is always on the commercial industries and few arguments dwell on indigenous biodiversity. Several stakeholders may assume that all introduced species are harmful unless proven others. Consequently, one can realis e that in certain circumstances intolerance to all things foreign determines people’s reaction to invasive species rather than their actual harm Conclusion An analysis of the issue illustrates that although introduced species have certain benefits, they appear to cause more harm than good to biodiversity. They cause competition and modify habitats for local species. Additionally, they may become parasitic or predatory on certain organisms. On top of that, some hybridize and cause diseases among indigenous species. The purported benefits of introduced species are questionable because when used as biological agents, they may turn on other vulnerable organisms. Additionally, those introduced species that fight pollution or modify habitats for the benefit of other organisms, also destroy it for others; the net outcome is negative. Therefore, introduced species may have a lot of commercial value, but their harmful effects on biodiversity are too much to ignore. References Bartomeu s, I Santamaria, L Vila, M 2008, ‘Contrasting effects of invasive plants in plant pollinator networks’, Oecologia Journal, vol. 155 no.4, pp. 761-770. Cohen, A Carlton, J 1998, ‘Accelerating invasion rate in a highly invaded estuary’, Science Journal, vol. 279 pp. 555-558. Geerat, V 1991, ‘When Biotas meet: Understanding biotic interchange’, Science Journal, vol. 253 no. 5024, pp. 69-99. Eildredge, N 1998, Life in the balance: Humanity and biodiversity crisis, Princeton University Press, Princeton. Gobster, P 2005, ‘Invasive species as ecological threat: Is restoration an alternative to fear-based resource management?’, Ecological Restoration Journal, vol. 23 no. 4, pp. 262-270 Johnson, T 2003, Invasive species, Burlington Free Press, New York. Moritz, C 1999, Conservation units and translocations: Strategies for conserving evolutionary processes’, Hereditas Journal, vol. 130, pp. 45-52. Naylor, R Williams, S Strong, D 20 01, ‘Aquaculture: A gateway for exotic species’, Science Journal, vol. 294, pp. 1655-1656. Newcomb, J 2001, ‘Alien species often fit in fine, some scientists contend’, The New York Times, 4 September, p. A8 Pimentel, D, Lach, L, Zuniga, R, Morrison, D. 1999. Environmental and economic costs associated with non-indigenous species in the United States, Cornell University Press, New York. Rhymer, J Simberloff, D 1996, ‘Extinction by hybridisation and introgression’, Annual Review of Ecology and Systematics, vol. 27, pp. 83-109. Simberloff, D 2003, ‘Confronting introduced species: a form of xenophobia?’, Biological Invasions, vol. 5, pp. 179-192. Spicer. J 2006, Biodiversity: Oneworld Publications, Chicago. Wilson, E 1992, The Diversity of Life, Harvard University Press, Harvard. Wiedenmann, R 2000, Introduction to biological control, https://illinois.edu/ This essay on Introduced Species and Biodiversity was written and submitted by user Marcus U. to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Monday, November 25, 2019

The advantages and disadvantag essays

The advantages and disadvantag essays The advantages and disadvantages of cellphone People need to commune with eachother they are afraid of being alone. One of the way how to be in touch with the world is to own a mobile phone. First of all a mobil phone is easy to use. You do not need any special knowledge reading the manual is enough. Little children to grandparents everybody are able to use it. Secondly the network area is far and wide so you can use the mobile phone almost eveywhere. For example if you are far away from the civilisation and involve in an accident, you can call help using your cellphone. Thirdly it is comfortable. It fits easely into your pocket, so you can carry it on everywhere. Naturally you must switch it off in some places, for example in the movies. You can also send e-mails, visit you bank account or even pay your bills using the cellphone. But there are some disadvantages of using cellphone. For example in the end of the month you recive bill, which always is bigger then you planned. Some of the scientists say that using the mobile phone causes cancer or is bad for your health in some other way. For example there are some cases of exploding batterys. Cellphones cost quite lot. So you must be careful because you might loose it and buying a new one is expensive. Finnaly, inspite of the bad sides of using cellphone, it is a good invention and is helpful and gives you opportunity to be in touch with your friends and family. ...

Friday, November 22, 2019

Formal report Essay Example | Topics and Well Written Essays - 3500 words

Formal report - Essay Example The company has a diverse customer base and thus the resources to improve the relationships between customers, employees and management, among others. The importance of leadership is highlighted in this report while defining the role expected of different players in the business. The report also incorporates the elements of building a proper customer service repertoire. The customer service is to be supported by a charter and standards, which also incorporates the use of norms and organizational practices. The above discussion and recommendations demand that Samsung improves on the employee policy to empower their contributions to customer challenges, by developing an employee well versed with the company operations, in different product departments, to improve on knowledge directed towards customer-service In this way, stronger customer loyalty will be built that leads to better company image and increasing revenue. The report concludes with the provision of a conclusion based on fi ndings, and recommendations that would improve on how the company relates with customers. The paper limits the study to the electronics branch of the business. This paper covers challenges that are faced by Samsung’s customer relations. Samsung has two challenges in customer relations. Customer service representatives experience high pressure because they receive many negative emotions and hear lots of complaints, and the working environment is not as comfortable as other clerical jobs, in retrospect to the nature of the job. The principles of customer service (integrity, respect, and accountability) must be integrated with the customer relations policy in Samsung’s approach to dealing with their clients, under customer support. The company has a diverse customer base and thus the resources to improve the relationships between customers, employees and management, among others. The importance of leadership is highlighted in this report while defining the role