All of the following are problems that remain to be solved in the United States with respect to air pollution except
a. Dramatically reducing emissions from older power and industrial plants
b. The current laws do not deal seriously with indoor air pollution.
c. Enforcement of the Clean Air Act is too stringent.
d. Airports are exempt from many air pollution regulations.
e. Two-cycle engines need to be regulated more effectively.
C
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What will be an ideal response?
Earth's population is aging
Indicate whether the statement is true or false.
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A) anticyclones. B) mountain ranges. C) mountain ranges, cyclones, and anticyclones. D) cyclones.
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Fill in the blank(s) with correct word