Biology, 10.02.2021 01:00 FIRENINJA117

Which statement is the best decription of how blood circulates through the body? A. The circulatory system pushes blood upward throughout the body
by using gravity

B. The heart contracts and relaxes causing a force to push the blood
throughout the body.

C. The respiratory system pulls the blood inward when inhaling and
pushes it outward when exhailing.

D. The blood circulates throughout the body by gravity only.

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