Blood volume. If you are tired and no blood is able to get to your body and you heart keeps going faster your heart is probably going to fail.
Answer:
There are 20 amino acids, but only ten are essential.
Explanation:
I think the answer is A because I have never learned about collapsed veins and it won’t cause arthritis
I think the answer is C.<span>saying no to a risky situation. Because you are REFUSING to a risky situation.
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