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jetrink
on June 26, 2019
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Can Life Exist in 2 and 1 Dimensions?
Two phyla of animals use a gastrovascular cavity[1] in which food enters and waste exits through the same orifice.
1.
https://en.wikipedia.org/wiki/Gastrovascular_cavity
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1. https://en.wikipedia.org/wiki/Gastrovascular_cavity