Well the hydrosphere is all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds. The Atmosphere is the envelope of gases surrounding the earth or another planet. So i'm going to go with D, Evaporation from the lakes and rivers.
Enzymes are catalysts, meaning that they are proteins that speed up reactions. So without them, there would be barely any activity.
This varieation can be justified because since they had different variations they probably had different niches which led them to evolve differently,this will help because the two species will have no competition
The jet stream brings down colder air from the north into the southern regions of the United States so B . southeast I think.
