First I have heard as well. It's not impossible I suppose but, unlikely.
we would only evolve to live on land if it was the better environment for us. I think once we got here natural selection and our own desire to stay in the newer, more commfortable environment would at least keep enough of us on land to keep a species going.
Though two seperate subspecies is more likely too, or one simply getting killed off. But I still have not heard of any examples of creatures evolving and moving as a species onto land, and then back. My understanding of such matters is that the species would only make such a move if it were the better option, and afterwards theres almost no chance they would move back as long as land remained the better option.
we would only evolve to live on land if it was the better environment for us. I think once we got here natural selection and our own desire to stay in the newer, more commfortable environment would at least keep enough of us on land to keep a species going.
Though two seperate subspecies is more likely too, or one simply getting killed off. But I still have not heard of any examples of creatures evolving and moving as a species onto land, and then back. My understanding of such matters is that the species would only make such a move if it were the better option, and afterwards theres almost no chance they would move back as long as land remained the better option.
