how does circulatory system help us
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Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide. These roadways travel in one direction only, to keep things going where they should.
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arteries carry blood away from the heat veins scary blood bank to the heart the circulatory system carries oxygen and nutrients and hormones to the cell and remote waste product like carbon dioxide this Roadways travel on the direction only to keep things going where there should.
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