Aquifers are underground sources of clean water that stretch over thousands of square miles. people who own land over the aquifer are free to take as much as they want. because there is no private cost associated with using the water, the water supply in the aquifer is likely to ______,
which is _____ outcome
a. remain fairy constant; an efficient
b. fall from overuse; an efficient
c. increase due to underuse; an efficient
d. remain fairy constant; not an efficient
e. fall from overuse; not an efficient
f. increase due to underuse; not an efficient