Nervous system since the brain is a part of the nervous system.
Answer:
B our enjoyment of nature
Around the waist can be dangerous because to could indicate that you have some other issue, like a heart problem.
Physical dependence is marked by a state of mental and physical abnormality when the drug is withdrawn.
Answer:
A concussion is a complex physiological process induced by a bump, blow, or jolt to the head or body, transmitting a force that causes the brain to literally bounce around or twist within the skull.
Explanation:
The damage done to the brain is at a microscopic level: cells and cell membranes are stretched and torn.
<em>Hope this helped :)</em>