As the united states is one of the largest contributors to atmospheric carbon emissions, describe one or two specific new policies might the united states enact to reduce its impact on global climate change. focus on policies that are not in place. discuss the economic impact of any proposed policy.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.