15. In addition to keeping wastes from entering a landfill, composting also A. a

Question

15. In addition to keeping wastes from entering a landfill, composting also

A. adds bulk to soil.

B. increases porosity of the soil.

C. adds nutrients to the soil

D. All of these are correct.

E. Increases porosity of the soil and adds nutrients to the soil are correct.

16. Many states now ban the disposal of household computer screens in landfills and incinerators because

A. they contain large amounts of lead, cadmium, and mercury.

B. they take up too much room.

C. they can not be composted.

D. they release chlorofluorocarbons into the atmosphere

19. The type of chemical most routinely emitted from industrial sources is

A. carcinogens.

B. mutagens.

C. corrosive substances.

D. greenhouse gases

Explanation / Answer

15. C. adds nutrients to the soil

16. A. they contain large amounts of lead, cadmium, and mercury.

19. D. greenhouse gases

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