What approach to control pollution is exemplified by the Clean Air Act before the 1990 Clean Air Act Amendments were enacted?

a.) taxation
b.) consumer choice
c.) command-and-control
d.) subsidies


Answer: c.) command-and-control

Environmental & Atmospheric Sciences

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events of the past; the present is the key to the past:a. catastrophism d. unconformity b. uniformitarianism e. weathering c. lithification

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Of these four lakes, which ones are above the water table?

A. 1 and 2 B. 3 and 4 C. 1 and 4 D. 2 and 3 E. None of these.

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Areas of ocean upwellings are often the sites of ________

A) high primary productivity B) tsunamis C) tanker and cruise ship accidents D) storm surges E) sea ice and ice caps

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Which one of the following is not an advantage of solar energy?

A. It is essentially pollution-free. B. It is available at no cost. C. It is an inexhaustible resource. D. It is a widely dispersed resource.

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