1. How does salt water intrusion impact the water supply?
A. It causes salt water to mix with freshwater.
B. It improves the water and uncle fires near the coast.
C. It causes overpumping of water.
D. It recharges aquifers.
E. It decreases the amount of usable drinking water.

2. Which of the following happens to water resources as a population grows?
A. The level of the water table rises.
B. The aquifers are not recharged as quickly.
C. The size of aquifers increases.
D. The water supply increases.

3. Which is the cost of a drought?
A. High precipitation levels.
B. Low precipitation levels
C. High water demand.
D. Low water demand

4. What percentage of earths water is freshwater?
A. 0.3%
B. 2.5%
C. 70%
D. 97%