The Kyoto Protocol was a commitment by industrial nations
A. to reduce greenhouse-gas emissions such as carbon dioxide and methane to about 5 percent below 1990 levels by 2012.
B. to reduce their CO2 emissions while helping undeveloped countries increase their CO2 emissions.
C. to boycott the United States because of their high CO2 emissions, which currently are more than 20 percent of the global total.
D. to increase CO2 sinks instead of reducing CO2 emissions.
Answer: A
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