Match each word to its correct meaning.

1. aquifer
2. freshwater
3. groundwater
4. groundwater overdraft
5. infiltration
6. saltwater
7. salinity
8. surface water

A. an underground layer of earth, gravel, or sand that yields water
B. water that has a low salt content; springs and lakes are considered freshwater
C. water within the soil that supplies wells and springs
D. when humans exhaust groundwater supplies before the supply can be replenished naturally
E. the process by which water on the ground surface enters the soil
F. water that has a high salt content; ocean water is considered saltwater
G. the salt content of a liquid
H. water that has collected on the surface of the Earth