Answer:
Skeletal muscles also play a role within the cardiovascular system. The heart acts as the pump to move blood out to the body cells, but the skeletal muscles assist with the movement of blood back to the heart.
Explanation:
The molecule is a biological catalyst called enzymes
ANSWER:
About 11 percent of the Earth's surface is used to grow crops...
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Cellulose : cell wall phospho : plasma membrane
strength : cell wall
selective membrane : plasma membrane