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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. ____________ can eliminate only the unwanted plants and give the beneficial plants a chance to thrive.
(a) Targeted extermination
(b) Dangerous chemicals
(c) Herbicides
(d) Selective spraying

2. There is a disagreement among scientists about how much _______ can be safely stored in the body.
(a) DDT
(b) Water
(c) Fat
(d) Arsenic

3. What was the source of the contamination in the eagle population?
(a) Other birds
(b) Trees
(c) Fish
(d) Nests

4. DDT is passed long through the ___________ during the course of nearly everyone's life.
(a) Exhaust fumes
(b) Air
(c) Packaged foods
(d) Food chain

5. Humans hold a narrow view of _________, using them when they are immediately useful only.
(a) Trees
(b) Animals
(c) Plants
(d) Pests

6. The Earth's soil is a ______________ of living creatures, all interdependent.
(a) Community
(b) Bed
(c) City
(d) Nest

7. Without the Earth's ________, there could be no plants.
(a) Human help
(b) Water
(c) Soil
(d) Light

8. The business of chemical _______ is booming because people approach plant life without thinking about any perspective but their own immediate desires.
(a) Weed killers
(b) Fragrances
(c) Cleaners
(d) Cosmetics

9. The campaign in the American West to replace _______ with grass is one example of man's arrogant approach to plants.
(a) Trees
(b) Cacti
(c) Sagebrush
(d) Sand

10. Continued use of pesticides could very well damage soil ___________.
(a) Over time
(b) Beyond repair
(c) Illegally
(d) In some areas

11. Large-scale, single-crop farming eliminates the _______________ that provided built in control of pests.
(a) Regulation
(b) Chemicals
(c) Possibility
(d) Biodiversity

12. What was not one of the results of the sprayings in Michigan?
(a) People became ill
(b) House pets were sickened
(c) The widespread death of the intended target
(d) Birds died

13. How long can chemicals remain in the soil to which they are applied?
(a) 12 years
(b) A few days
(c) 1 year
(d) 1 month

14. What did the birds provide naturally that made their deaths all the more significant?
(a) Songs
(b) Eggs
(c) Pest control
(d) Migration patterns

15. Radiation used to be limited to that which occurred naturally - in rocks, cosmic rays, and __________.
(a) Bombs
(b) Trees
(c) Sunlight
(d) Charcoal

Short Answer Questions

1. Herbicides can change the _________ of plants, making toxic plants more appealing to animals.

2. All of the Earth's watersystems are _____________, so contamination of a part is contamination of the whole.

3. Spring begins in the United States with the once-familiar ___________.

4. Wildlife biologists and forestry experts __________ the mass killings of so much life.

5. Chemical insecticides and herbicides are challenging because they are _____________.

(see the answer keys)

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