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Q&A How would human society develop if humans had gills?

Imagine a species (the cause is largely irrelevant - could be alien meddling for all I know) that is Homo sapiens in all except one detail: they have additional organ which is kind of like gills - ...

4 answers  ·  posted 10y ago by DVK‭  ·  last activity 7y ago by DVK‭

Question biology evolution humans