Which of the following statements is true of the Sahara Desert, the Arctic and sub-Arctic regions of North America?
-
A.
The areas inhabited by primitive hunters and traders -
B.
These areas have the world’s largest known deposits of crude oil -
C.
population is found in isolated oases and along the river valley’s -
D.
The enviroment is very harsh for both man and animal -
E.
The inhabitants belong to the oldest races in the world