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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6 "Earth's Green Mantle".

Multiple Choice Questions

1. What group of substances includes insecticides and pesticides?
(a) Helpful mixtures
(b) Toxic chemicals
(c) Organic cleaners
(d) Necessary evils

2. What happens to the people in the beginning description which puzzles doctors?
(a) They begin to hurt each other
(b) They have green spots on their faces
(c) They become ill
(d) They disappear

3. Life is able to adapt to environmental change over _____________, according to Carson.
(a) A few months
(b) Millennia
(c) A decade
(d) A year

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

5. Chemical insecticides and herbicides are challenging because they are _____________.
(a) Ignored
(b) Hidden from view
(c) Sometimes safe
(d) Difficult to detect

Short Answer Questions

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

2. DDT seems to be able to be stored in the __________ tissues of the body.

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

4. Every human being now has contact with _________ every moment of his life - even from conception.

5. Chemicals can travel down ___________ or in underground aquifers to the bodies of water.

(see the answer key)

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