When different parts of an organism work together in unison

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asked Sep 28, 2017 216k views

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Savi · Answer 1 · 2017-10-01T20:56:46+0000

The circulatory and respiratory systems work together because when we breathe we use up oxygen. Our circulatory system converts that into carbon dioxide, which is the air that we exhale or breathe out.
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When different parts of an organism work together in unison

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