Answer:
Asagais dream is to return to Africa.
Beneatha sneers at his talks and dreams about returning to Africa.
Answer:
In case Earth becomes uninhabitable.
Explanation:
If for whatever reason we are forced to leave Earth there are no other hospitable planets we could live on. By making mars more like Earth we could eventually relocate to mars.
Answer:
B) They pay tribute to Poe's importance as a writer and poet.