Your answer will be A.) hope this helps you good luck
C) they are multicellular
Bacteria is a large group of unicellular microorganisms. One bacterium is one small organism, and it is prokaryotic cell.
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During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
C) water and energy ATP
The end products of respiration.
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can you tell question in English your launguage I can't understand