In which way will energy be used after it leaves the mitochondrion during cellular respiration?
1 repairing parts of damaged tissue
2 combining with carbon dioxide
3 building new oxygen molecules
4 starting the second stage of respiration

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.

b is the best answer for this question.