Answer:
It is called oxygen-rich blood.
Explanation: The heart pumps blood to all parts of the body. Blood provides oxygen and nutrients to the body and removes carbon dioxide and wastes. After the blood gets oxygen in the lungs.
Meaning: The Diaphragm
Because they don't use a variety of muscles as much as they could by doing more sports so when they use the lesser used muscles, they could get hurt.
Explanation:
don't do drugs in the first place
false
this. statement is very wrong