With respect, Elsie... Have you ever seen the African savannah on any nature program? There's a tree here & there, absolutely. But that's a far cry from the jungle areas where the modern chimpanzees live.
I've seen NO after the flood, and I really doubt that anyone will 'adapt' to live in what's there now; but will move to a location that is very similar to what they had before the weather change.
protoman would do the same.