Darth Budd
Inna-Gadda-Davida
there are several organisms that are small enough that they don't need a heart, but since all vertebrates share a common ancestor from way back in the day, we all inherited a system that evolved to suit our individual needs. besides, can you think of anything more efficient than moving fluid than your circulatory system? your heart is more powerful than EVERY man made pump of similar sizeexplosions said:You actually believe this?
It seems to me as if at least ONE species would have developed an alternative to a heart/brain or lungs(talking about land animals here) if this were the case.