A group of environmental scientists wants to make a plan that will
reduce human impacts on average global temperatures. Which of the
following plans is MOST LIKELY to have the greatest effect on global
temperatures?
0
A.
A plan to reduce chlorofluorocarbons in the atmosphere by 20%
B. A plan to reduce carbon dioxide in the atmosphere by 20%
c. A plan to reduce methane in the atmosphere by 20%
A plan to reduce nitrous oxide in the atmosphere by 20%