What is a reservoir for carbon and nitrogen but not phosphorus?

The atmosphere is a reservoir for carbon and nitrogen and cannot be a reservoir for phosphorous.

Explanation:This is because the phosphorous cycle does not include gaseous phase.

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.