Answer:
Behavior.
Explanation:
Since jeff is expelled from school for missing to many classes it seems like this is a behavioral problem. and i think he is seeing a behavioral Therapist.
Answer:

The social boycott is the act of persistently avoiding a person by other members of the society. It is society's collective refusal to engage a person in the normal social and commercial relations. Its goal is to make that individual so uncomfortable that he decides to voluntarily leave the society
Explanation:

Answer:
The depth leads to older fossils
Explanation:
The deeper the fossil the older it is
For land in the new world