Across
- 4. things that damage the quality of air, water, and land
- 5. identifiable sources of pollution
- 7. water that occurs below the surface of Earth
Down
- 1. an area of land that drains all the streams and rainfall to a common outlet
- 2. the contamination of water or air that does not originate from a single discrete source
- 3. a body of porous rock or sediment saturated with groundwater
- 6. a hole drilled into the ground to access water