Term paper on Rachel Carsons Book
Rachel Carsons Book Essays
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Rachel Carson s Silent Spring begins with a short story depicting a made-up town in the
heart of America where all life once lived in harmony with its surroundings. Carson quickly
presents her central issue by quickly describing the disasters this made-up town faces. Because
what silenced the made-up town was the inhabitants and their ignorance to the environmental
hazards they had imposed as a result of their decisions. Although the town does not exist, the
potential of the occurrence of these disasters is an eye-opener for the reader, as well as a great
lead in for the book.
A reoccuring theme in biology, life is a result of the interaction between living things and
their non-living environment. However, this balance is disrrupted when the non-living
environment is contaminated by dangeroud materials. Carson states that since the 1940's over
200 basic chemicals have been created for killing insects, weeds, rodents, and other organisms
considered pests by our society. The introduction of such chemicals into our environment
have caused an unmeasurable amount of damage. The environmental damage caused by a
pesticide must be measured in the totality of life forms it affects, ie., along the entire food chain.
Sprays to kill mosquitoes accululate in fish, in fish-eating birds, and in mammals eating birds
and fish (including man!).
Today s insecticides are no match to the inorganics and the Arsenicals used before World
War I. Of these, the most widely used can be classified as either DDT or the organic phosphorus
insecticides. DDT is a chlorinated hydrocarbon. Many believe this pesticide is harmless
because there have been a substantial number of people that have come in contact withteh
chemical and have suffered no physical damage. But the truth is that DDT is very harmful.
Although the harmful properities of the chemical is not seen immediately, its damageing
characteristics become measurable as the chemical is passed on from organism to organism
through the food chain; becoming more and more harmful with each transfer. Long term
exposure to pesticides may result in the gradual accumulation of a lethal dose. While the residue
at the time of application may be within an acceptable tolerance, fat-soluble compounds may
continue to accumulate in body fat and in substances like milk to very high levels. These
chlorinated hydrocarbons were directly responsible for tremendous environmental damage.
Several species of birds were driven to near extinction before the full impact of the insecticide
was realized. As for Phosphorus insecticides, there are obvious hazards. This chemical is
known for its acute poisoning of people such as people who spray it or people that may come in
contact with it through drifting spray comming from vegetation coated with it. By destroying
enzymes in the body that perform specific functions, the physical harm done to the person is very
quickly. To workers dealing with teh...
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