About two-thirds of a cell is composed of water. what is the name of the process in which water moves into or out of the cell membrane to maintain homeostasis?
a) regulation
b) endocytosis
c) exocytosis
d) osmosis

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.

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

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