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tresset_1 [31]
3 years ago
10

Flatworms have no need for circulatory and respiratory systems because

Biology
1 answer:
Oxana [17]3 years ago
6 0
Flatworms have no need for circulatory and respiratory systems because they are able to actively diffuse oxygen through their skin and their body layout is such that they do not need to transport oxygen in order for it to get to their cells.
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