1. What is not one of the now chemically resistant insects in the United States?
(a) House mosquito
(b) Spider
(c) Wood tick
(d) German cockroach

2. Chemicals can travel down ___________ or in underground aquifers to the bodies of water.
(a) Streets
(b) Mountains
(c) Sewers
(d) Watersheds

3. What are numerous in both kind and in sheer quantity according to Carson in the opening of the book?
(a) Lakes
(b) Cats
(c) Birds
(d) Pebbles

4. What is the most important earth-dwelling creature, according to Carson?
(a) Mole
(b) Mouse
(c) Millipede
(d) Earthworm

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

Short Answer Questions

1. In ___________ in the 1950s, the chemical that appeared in the water had actually been created spontaneously by the interaction of other chemicals present.

2. Chemical residues in _______ are another source of gradual buildup of chemicals in the body.

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

4. What are so popular that tourists come to see them every year?

5. Humankind is producing new ________ in the laboratory, though these used to be limited only to nature's actions.

(see the answer key)

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