roxannejosey3906 roxannejosey3906

28-02-2018
Biology

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We are blood vessels that send blood back towards your heart. most of the blood we carry doesn't have much oxygen left in it. what is this?

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stoneman024 stoneman024

28-02-2018

veins carry blood to the heart while arteries carry blood away from the heart distributing it throughout the body.

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