In the earliest stages of development, all four organisms have a knobby head, gill slits, and a tail. These similarities tell us that all four of these organisms have a common ancestor.
Jayden, you didn’t put the diagram so we can’t help. ｡ﾟ(ﾟ´Д｀ﾟ)ﾟ｡
It makes farmers preform more tasks by hand.
Hope this helps!
Answer:
it increases for a while and then decreases
