An example of how the atmosphere interacts with the lithosphere occurs when
1) ocean water evaporates into the air
2) wind produces waves on the ocean
3) water evaporates from the ocean and goes into air
4) rain falls on a slope and washes soil away

and after water is usually warmed by the sun the water temperature raises and then evaporates .

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.