After mitosis, cytoplasm and cell membrane divide:

That is because once the chromosomes replicate and undergo mitosis, the cytoplasm divides and the cell membrane pinches in the case of animal cells into two daughter cells.

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.

i need an image of the diagram