Explain why flatworms do not need a respiratory or circulatory system

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asked May 4, 2018 185k views

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Explain why flatworms do not need a respiratory or circulatory system

Biology
high-school

Haxpanel asked

by Haxpanel

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1 Answer

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Because Oxygen and CO2 are transported into and out of individual cells by simple diffusion.

Pedram Behroozi answered May 10, 2018

by Pedram Behroozi

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