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How are the respiratory and circulatory systems similar?

A - Both systems provide glucose and other substances to cells.
B - Both systems regulate blood flow throughout the body.
C - Both systems help remove carbon dioxide from the body.
D - Both systems send messages to the nervous system for breathing.

1 Answer

4 votes

Answer:

It's B.

Step-by-step explanation:

Both circulate blood flow throughout the body

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