The more physically fit you are A. the higher your resting heart rate.
B. the lower your maximum heart rate.
C. the higher your maximum heart rate.
D. the lower your resting heart rate.

the answer is life structure

answer(b) keep oxygenated and deoxygenated blood separate;

delegated (sometimes called enumerated or expressed) powers are specifically granted to the federal government in article i, section 8 of the constitution. this includes the power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a post office.