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Zielflug [23.3K]
3 years ago
13

Why does the heart automatically adjust the flow of blood to match activity levels?

Health
2 answers:
ch4aika [34]3 years ago
5 0
Your heart is going to start bumping oxygenated blood through your body as with more exercise more oxygen is needed.
raketka [301]3 years ago
5 0

C.

It builds up a higher level of oxygen in the blood

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