Multiple Choice
Between 1990 and 2006 emissions trading systems reduced SO₂ emissions by power plants in the U.S.by 53% at what cost to the industry?
A) 100 times what the EPA projected
B) one-tenth what was expected by the industry
C) approximately what the industry projected
D) 3 times what the EPA expected
E) no cost to the industry
Correct Answer:

Verified
Correct Answer:
Verified
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