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I need your help with my homework I will give you 20 points for this question
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I need your help with my homework I will give you 20 points for this question

I need your help with my homework I will give you 20 points for this question-example-1
User Buc
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They benefit from having the respiratory system give oxygen and take away carbon dioxide. Muscle cells benefit by having circulatory system bring them blood and oxygen. The heart pumps blood towards the arteries, arteries carry blood to the cells.
User Martinarroyo
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