Answer:
The cardiovascular system delivers oxygen, nutrients, hormones, and other important substances to cells and organs in the body. It plays an important role in helping the body meet the demands of activity, exercise, and stress. It also helps maintain body temperature, among other things.
Answer:
A. cycling
Explanation:
As not only do you have to keep pedalling with the same joints but, there could be hills and you also have to use your arms
Answer:
a, james is asocial, he doesn't trust doctors
