Individual cloud layers in the giant planets have different compositions. this happens because

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.

the answer u all are looking for is 4000000000000000000000 million years.

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.