The Immortality of Bacteria

In bacteria, they seem to have this property of near immortality. None of us has seen some one who is immortal, right? Ah. And definitely large animals do not have the property of immortality. We have a certain life span, life span that's built into us as we grow older. But when you bring this rock out, the is bacteria come back to life. I meana hundred million years is any few ifif an organism survives a hundred million years, that is more or less immortal.