How does the heart provide energy to the body ?

Explanation:

dued i learned this is science and im only in 7th grade its easy the heart is an amazing organ. It pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping five or six quarts of blood each minute, or about 2,000 gallons per day.

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