D) all of the above
it is mostly A tho, but im pretty sure there are tourists that go there and that melting water is used for hydro-power too.
So D is your best choice
hope this helps
Answer:
Some of the most common problems that are already happening are pretty much the same that'll happen in the future.
Ozone depletion
Climate change
Global warming
Acid rain
Carbon dioxide contributes to air pollution in its role in the greenhouse effect. Carbon dioxide traps radiation at ground level, creating ground-level ozone. This atmospheric layer prevents the earth from cooling at night. One result is a warming of ocean waters
Explanation:
B. gained control of vietnam cambodia and laos
If the reservoir has a dam, then it is A. But since your asking about just a reservoir, then the answer is B. If you think about it, a reservoir is almost like a lake, and it can overflow as well.