Across
- 2. mesurement of how acidic or base a substance is
- 5. removal of sediments from sea floor or river
- 6. anything capable of causing deisese
- 7. stream that flows to a larger body of water
- 8. property of being a base PH of 7-14
- 11. water that is above the earths surface
- 12. pollution that can not be traced
- 14. property of being acidic. substances with a PH of 0-7
- 15. organisms that float in the water
- 17. land area where all water goes to one body of water
- 19. an underground treatment for household sewage
Down
- 1. saltwater ecosystem and orginisms
- 2. water falling to the earth in any form
- 3. are of land that allows water to replenish an aquifer
- 4. substances that pollute an enviorment
- 9. water held beneath the earths surface
- 10. man made underwater structure
- 13. solid objects or masses by or floating in water
- 16. capable of causing injury or death especally by chemical means
- 18. underground rock formation where water collects