Identify and describe how constructive force shaped the coastal plain.

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.