Activity for RKeller‭

Type	On...	Excerpt	Status	Date
Question	—	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 be beneficial to a mammal-like creature, such as the hematocrit or possibly the complexity of the organ... (more)	—	almost 8 years ago