what are the three main classes of an element. provide two physical properties for each class of element

then that particular organisms become extinct.

d. organisms have cells with different shapes and functions.

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.