Across
- 2. The entire area of land that is drained by a river
- 7. When excessive amounts of heat are added to a body of water
- 10. accumulation of salt in soil
- 11. phosphorous, animal wastes, and fertilizers causing excessive growth of algae
- 12. Water that seeps underground
- 13. pollution discharged from a single source
- 14. a type of well that tapes directly into an aquifer
Down
- 1. top of the zone of saturation
- 3. Fresh water above ground in lakes, ponds, rivers, and streams
- 4. The area of land form which the groundwater originates
- 5. process in which salt is removed from salt water
- 6. pollution that comes from many sources
- 8. situation where natural resources are used up
- 9. The introduction of foreign substances into a body of water
- 14. Large amounts of groundwater found in rock formations