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OpenStudy (anonymous):
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):
help
OpenStudy (anonymous):
please
OpenStudy (anonymous):
D to transport materials throughout the body
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
sorry for a late medal
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OpenStudy (anonymous):
You are welcome
OpenStudy (anonymous):
and thanks for the medal
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