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This test consists of 5 short answer questions, 10 short essay questions, and 1 (of 3) essay topics.

Short Answer Questions

1. Without the Earth's ________, there could be no plants.

2. Since the 1940s, more than 200 chemicals have been created for the purpose of _____________.

3. In 1960, in the Klamath/Tule Lake region, agricultural pesticides were collected in the water bodies of a _____________.

4. What group of substances includes insecticides and pesticides?

5. What is the name for chemicals that mix with other pollutants and substances in the water, producing unidentifiable results?

Short Essay Questions

1. What is the environmental problem that results from all of the water sources of the Earth being connected to each other?

2. What did the chemical warfare of World War II lead to?

3. What was the immediate and devastating result of the spraying of the land for Dutch Elm Disease?

4. How are commercial fishermen affected by the spread of chemicals among the fish population?

5. What were the results of the gypsy moth spraying in 1956?

6. What is unlikely to bounce back after spraying that kill large numbers of their kind?

7. What happens when the fat stores of the fish are being drawn upon for energy?

8. Why is the eagle population suffering in relation to the chemicals being used in pest control?

9. What happens when plants grow within the chemically-laced soil?

10. What does man want to replace the American West's sagebrush with?

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Animals are just as affected by the use of insecticides and pesticides as the pests themselves.

Part 1: What are some of the ways in which animals are affected by the chemical use?

Part 2: How are the animals exposed to the chemicals in the first place?

Part 3: What might be the long term affects of the harm of animals in the world?

Essay Topic 2

As all of the Earth's water systems are connected, the pollution of one means the pollution of them all.

Part 1: Summarize one of the examples Carson presents in Chapter 4. What happened during this time of water pollution?

Part 2: What are the main concerns with it comes to water pollution?

Part 3: Is there any way to stop water pollution? Why or why not?

Essay Topic 3

The loss of the songs of the birds is a frightening idea to many readers. In trying to control the world, the birds are leaving for other areas or dying off completely.

Part 1: Describe why the birds are leaving certain areas.

Part 2: Summarize the Dutch Elm Disease response and how it affected bird populations.

Part 3: What might have been a more natural response to the Dutch Elm Disease problem?

(see the answer keys)

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