Answer:
a very powerful and influential nation (used especially with reference to the US and the former Soviet Union when these were perceived as the two most powerful nations in the world).
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.
Answer:
it is 5:15
Explanation:
since the ration of ac and dc is 1:3
the ans is 5:15
blc 5 is multiplying the two sides of the ratio