Question

As part of its program to _____, California began running its own carbon cap-and-trade program on January 1, 2013.

A. make economic growth and environment protection mutually exclusive

B. increase the limit of the carbon footprint level of vehicles

C. cut greenhouse gas (GHG) emissions to 1990 levels by 2020

D. produce 41 percent more electricity than it had in the 1980s by 2020

Answer

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