gwaydms t1_j8dwa0f wrote
Reply to comment by Larkson9999 in TIL the closest whale relative that is not a marine mammal is the hippopotamus after the species diverged 54 million years ago. by SuperMcG
It's one mechanism of evolution. If the situation to which the organism is adapting is temporary, natural selection will favor those that survive and reproduce best under those conditions that existed before.
Larkson9999 t1_j8dwlvv wrote
That's still natural selection.
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