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A closed circulatory system is one in which (1 point) A) blood spreads freely throughout all of the body’s tissues and organs. B blood flows through a system of blood vessels throughout the body. C) blood travels through blood vessels into cavities called sinuses. D) blood is pumped through a system of blood vessels and air sacs.
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A closed circulatory system is one in which: blood flows through a system of blood vessels throughout the body.
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Asked 3/19/2013 12:21:48 PM
Updated 1/11/2015 5:30:38 PM
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A closed circulatory system is one in which: blood flows through a system of blood vessels throughout the body.


Added 1/11/2015 5:30:38 PM
This answer has been confirmed as correct and helpful.
Confirmed by Janet17 [1/11/2015 5:34:34 PM]
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