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Q&A Is there any set of circumstances in which having 3 hearts in an organism would be beneficial in a species?

As a school project, I am designing an extraterrestrial animal, and I would like to include a multiple-hearted mammal-like organism. Is there any set of circumstances in which having 3 hearts would...

9 answers  ·  posted 8y ago by RKeller‭  ·  last activity 7y ago by RKeller‭

Question biology creature-design xenobiology