People can obtain groundwater by drilling a well
a. above the water table.
b. into an aquifer.
c. into the unsaturated zone.
d. into the impermeable layer.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

8. compare the education of a sparta boy and an athenian boy. (2 points)

Which of the following is an example of relocation diffusion