Death and birth are evolved. Micro-organisms don't do it. A few multicellular organisms don't either (e.g. there's a kind of immortal jellyfish, but what it d

Death and birth are evolved. Micro-organisms don't do it. A few multicellular organisms don't either (e.g. there's a kind of immortal jellyfish, but what it does is periodically revert to an amorphous mass and then grow back into a jellyfish.)