why heart is necessary for us?
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heart is necessary because
1.it separates deoxygenated and oxygenated blood.
2.to pump blood to all the parts of the body.
1.it separates deoxygenated and oxygenated blood.
2.to pump blood to all the parts of the body.
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1
Of course, the heart is also a muscle, so it needs a fresh supply of oxygen and nutrients, too, Phillips said. Thecardiovascular system circulates blood from the heart to the lungs and aroundthe body via blood vessels
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