number 2 is for question 1
number 1 is for question 3
number 4 is for question 2
number 3 is for question 4
I believe it would take at least six hours for it to take effect <span />
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>
Answer: Possibly, a pulmonary exercise stress test.
Explanation: