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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 4 "Surface Waters and Underground Seas".

Multiple Choice Questions

1. What is used to pollinate the plants and to pollinate the trees?
(a) Humans
(b) Bees
(c) Hummingbirds
(d) Scientists

2. What is the name for chemicals that mix with other pollutants and substances in the water, producing unidentifiable results?
(a) Sludge
(b) Gunk
(c) Muck
(d) Trep

3. Only _________ have gained the ability to reserve the roles and actually change the environment they live in.
(a) Animals
(b) Insects
(c) Plants
(d) Human beings

4. What is not usable for drinking, irrigation, or industry?
(a) Seawater
(b) Lake water
(c) Stream water
(d) Frozen water

5. What is contaminated with DDT so that it ends up affecting a human consumer of eggs?
(a) Hay in the barn
(b) Water
(c) Farmers
(d) Chicken feed

Short Answer Questions

1. How long can chemicals remain in the soil to which they are applied?

2. The town Carson describes is one where townsfolk and farmers and wildlife all live in _____________.

3. Because animals are affected by chemicals, scientists are having a hard time finding uncontaminated animals to serve as _________ in experiments.

4. What group of substances includes insecticides and pesticides?

5. Much of the world's water is polluted by ________ from many sources.

(see the answer key)

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