Why is water necessary to your body? A.) it prevents large changes in blood pH
B.) it dissolves and transports substances
C.) it dissolves nonpolar fats and oils
D.) it forms the solutes in blood plasma

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 think its both a and b