Across
- 4. process of water movement in a plant
- 6. body of rock that contains groundwater
- 7. allowing particles in water to settle
- 8. restore an electric charge
- 10. - excessive richness which causes a dense growth of plant life and death of animal life from lack of oxygen
- 13. removal of salts and minerals from water
- 14. water held underground
Down
- 1. the process of cleaning something
- 2. when water collects due to humid air
- 3. separation of solid particles from liquid
- 5. a large natural lake used for water supply
- 7. being able to maintain something
- 9. the process of filtering something
- 11. the action of liquid changing to a solid
- 12. prevention of wasteful use, to protect