The smallest among these 4 groups is Order . Explanation: The arrangements for classification are Kingdom , Phylum , Class , Order , Family , Genus , Species .
1. The group nearest the end or with the shortest stem of a phylogenetic tree has evolved most recently. In this case it is eutherians.
2. The group with the longest stem has been around the longest: fish
3. A direct common ancestor will share the same immediate line, like marsupials and eutherians. Fish and marsupials do not have a common direct ancestor.
It is a form of natural selection called sexual selection.
Answer:
I've been warning people about this user as well, don't enter that link >:I
They think they are sneaky with there like 1000 profiles, what a fool they are, if you have the same pic people will instantly know!!
It will become a theory after repeated experimentation
