Answer: a hydrosphere is a sphere of water in which the water cycle operates in a systemic matter so i guess you couold include the way it operates is in a systemic manner.
The answer for this item is letter "A. granted to the national government by the U.S Constitution". These are also known as "enumerated powers" which include the power to regulate foreign and estate commerce, power to coin money, declare war, etc.
<span>Self-validation........................................................</span>
