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OpenStudy (anonymous):
WILL FAN AND MEDAL FOR BEST HELP 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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OpenStudy (anonymous):
Anyone???
OpenStudy (minecraftqueen):
D. to transport materials throughout the body
OpenStudy (minecraftqueen):
@ButterFlyMagicalRain
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