hello the answer is B. intensity It reflects how difficult an exercise is for a certain person to complete and the amount of oxygen the body uses to do an exercise and the amount of calories burned while doing the activity. The higher the intensity, the harder the activity, the higher the heart rate, and the more burned calories hope this helps!!!
The answer to this question is D. Colon
According to popular belief, Most medical workers think that the colon does not possess any form of digestive system.
But, Recent research shows that several test subjects actually could absorb energy from starch and nonstarch polysaccharides from their colon
Answer:
The answer is A, Both have a crest and a trough.
Explanation:
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