Helll

people are idiotic. Lol I'm trying to get warnings

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After hydrogen and oxygen, witch element makes up almost all of the most common substance in your body

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food