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Effects of chemicals in the environment
Industrial pollution and its effects
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The use of planes for the spraying of insecticides has increased. The gypsy moth came in to the United States unplanned and the first thing that was done was that they tried to spray insecticides. The result was that more moths came back after the spraying. The alternate used to kill off the moths was to bring in parasites and it worked. Another incident in Long Island occurred with the same type of moths and they sprayed the insecticides that killed livestock and affected bodies of water. People became outraged since companies kept using these chemicals to try and get rid of the moths. Many animals were harmed throughout the entire process. Fire ants made their way into the United States from South America. Many farmers claimed that
Ramona the pest by Beverly Cleary is a silly, exciting and fun book to read. Ramona is excited about the first day of kindergarten. But when she gets there it isn’t what she thought it would be like. Ramona is distracted about another classmate’s hair and can’t wait any longer to touch her hair. Ramona gets in trouble a few times but then gets over it. Her sister Beezus (Beatrice) thinks that she is a pest and everybody in her neighborhood thinks she’s a pest. At first when she starts kindergarten she loves her teacher but when Ramona gets in trouble a few times she’s beginning to thinks her teacher doesn’t like her anymore.
Humans are trying everything they can to trap the Gypsy moth and try to remove it from there eco-system, but the Gypsy moth keeps on reproducing. An annual trapping program is one method in which they place traps that attracts male Gypsy moths and gets them stuck in a sticky surface. If a substantial amount of moths are caught by the trap then more traps are set in that ecosystem. Bacillus thuringiensis var. kurstaki (BTK) is a toxic soil bacterium that is sprayed over an area to prevent defoliation. When Gypsy moths are exposed to BTK the toxic causes stomach poisoning and they would eventually die. (Government of Canada,
In North America in the 17th century, slaves were imported from Africa in order to mass produce tobacco, a popular plant throughout the world, most commonly found in the Americas. Like in Mexico, these slaves working in tobacco plantations were purchased solely due to the fact that they were cheap and easily replaceable, not requiring a monthly
The first similarity between the regions of America and Africa was the spread of new crops. In America, crops such as bananas and sugarcane had found their way to the region and became heavily cultivated. Evenmore so, livestock had spread like wildfire through the americas, particularly domesticated animals such as cows, sheep, and pigs, and this was due to the fact that the Americas were largely free of natural predators. Similarly, Africa had received crops such as corn and maize had reached the
Early in history DDT was a very effective chemical that killed many parasites and stopped the mass spread of malaria. But the reward is not worth the damage that it does to the environment, especially in modern day where we have other ways to prevent parasite and diseases from getting to us. "Top of the Food Chain" by T. Coraghessan Boyle, is a story about the absolute absurdity of things that human beings do to their world and to their fellow living beings. Set during a Senate hearing by a chemical company executive on the defensive about the effects of DDT in Borneo. Basically, poison was used to get rid of mosquitoes. Didn't work. So they brought in geckos, that died from the poison. Cats ate dead geckos, and cats died. This brought on rat infestation. So they brought in more cats and cycle started over again. He is arguing that humans are wrong for destroying their planet with pesticides and other harmful things; this satirical piece effectively supports his argument.
The expansion of European plants into the New World commenced with Columbus's second voyage (Crosby, 67). Columbus loaded his seventeen ship fleet with seeds and crop-producing fruits ...
Rachel Carson’s seminal 1962 book, Silent Spring, told the real-life story of how bird populations across the country were suffering as a result of the widespread application of the synthetic pesticide DDT (dichlorodiphenyltrichloroethane), which was being used widely to control mosquitoes and others insects. Carson reported that birds ingesting DDT tended to lay thin-shelled eggs which would in turn break prematurely in the nest, resulting in marked population declines. The problem drove bald eagles, our national symbol, not to mention peregrine falcons and other bird populations, to the brink of extinction, with populations plummeting more than 80 percent (Mildred, 2012).
When questioning the practice of eliminating burdening animals, Carson employs the metaphors, “chains of poisonings” and “wave of death.” These metaphors depict the eradications as shackling to the environment and bringing forth sweeping amounts of death. These negatively connoted comparisons evoke unpleasant feelings toward the extermination of invasive species. Further along in the passage, Figurative language is again utilized in the analogy, “Who has placed in one pan of the scales the leaves that might have been eaten by the beetles and in the other the pitiful heaps of many-hued feathers, the lifeless remains of the birds that fell before the unselective bludgeon of insecticidal poisons?” The analogy weighs the pros and cons of use of insecticides to show that it is heavily degenerative to the ecosystem. The reader then discovers that the figurative scale is heavily tipped towards the negative side of results. Metaphor and analogy used in the passage paint a vivid picture in the reader’s mind of the tragedy that occurs when animal populations are poisoned to avoid any possible undesirable dimension of their
Spinosad insecticide is an organic compound, produced by some bacteria microbes present in the soil that were first discovered surviving in rotting sugarcane rums (Thomas, 2001). It is made of two complex compounds spinosyn A and D. The compounds are very toxic to a variety of insects and less toxic to humans and some important insects beneficial in the farm such as bees. This insecticide was first discovered by Lacey and Goodfellow, in 1975.
Originally, sugar started in Southwest Asia and made its way to the New World by Christopher Columbus in 1492. He started to grow it in this new tropical environment and the plant grew rapidly. Due to the success of this plant, other colonies wanted to get their hands on it. The colonists spread the plant out to the European colonies, Spanish colonies, and the Portuguese brought sugar to Brazil. Sugar made its way all around the world.
Introduced Argentine ants (Linepithema humile) are rapidly displacing native ant species around the world as a result of: (1) aggression by frequently raiding, immobilizing and killing native ants, (2) less intraspecific competition due to genetic homogeneity, (3) competitive exclusion using large numbers, quick location and rapid recruitment, (4) and the absence of natural ant and parasitoid enemies. Native to Argentina, L. humile has been quickly spreading throughout the world at an incredible pace. They are currently present in six continents with at least 28 separate introductions (Suarez et al. 2001); primarily a result of human transportation. The introduction of L .humile in the US has been traced all the way back to a Brazilian cargo ship in Louisiana during 1890. Their ability to disperse rapidly cannot be overlooked as well. They can cover vast distances in short periods of time, with some expansion rates as a high as 154m/yr (Suarez et al. 2001). Even though L. humile is a fairly small species they are still very destructive, more so than many other species of ants. L. humile is responsible for the disruption of many ecosystems that they have invaded. The biggest reason for this is their ability to dominate other species, most notably other ant species. Early on reasons for this were unknown. How could such small ants displace other (native) ant species so quickly? Now the reasons are becoming clearer.
Have you ever thought about how your fruits and vegetables are grown? How about which ingredients are put into bug sprays and insecticides to ward off those pesky insects? Look no further because author Rachel Carson looks deep into the many environmental issues caused by pesticides and herbicides in her New York Times best-selling novel, “Silent Spring.” “Silent Spring” is a collection of studies which were performed in an effort to educate others about the harmful things occurring everyday to their foods and every-day environment in hopes of giving them a wake up call. This novel is thought by many to be a revolutionary novel that forced people to take notice of the harm being caused in their world, many of which people were unaware of. After discovering the results of these chemicals, it really makes one wonder, is the luxury of being insect free really worth all of the consequences?
Her audience is anyone who cares about the world we live in and its long term health. “The world we live in” is a vast category, which includes our entire ecosystem as well as animals and humans. The essay also targets producers and users of chemicals and pesticides used for insect and pest control. In “The Obli...
damage was done by poisons that farmers used to kill insects. The worst poison was DDT.
Caribbean planters did not even grow their own food, so they had to import it from the colonies in North America, primarily South