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Biology, 29.08.2019 18:30 litman876

What is the main function of the circulatory system in multicellular organisms? a. to bring oxygen into the lung b. to put carbon dioxide into all blood vessels c. to expel waste products from the body d. to transport materials throughout the body

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What is the main function of the circulatory system in multicellular organisms? a. to bring oxygen...
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