Which explanation best explains the role of enzymes as catalysts in living systems? enzymes accelerate chemical reactions without getting used up in the process. enzymes accelerate chemical reactions by getting used up in the process. enzymes decelerate chemical reactions by getting used up in the process. nextreset

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.