Across
- 3. ester containing nitric acid
- 4. collects all of the sewage
- 6. air is mixed with liquid
- 9. degree
- 10. water enters from unknown source
- 11. water act federal law governing pollution
- 12. a ester containing phosphoric acid
- 15. cloudy
- 16. containing salt
Down
- 1. organisms status part of ecosystem's health
- 2. water not drinkable
- 5. carrying off solid and liquid waste
- 7. care of something
- 8. to form masses and clumps
- 12. symbol for acidity of solution
- 13. source pollution water enters from known source
- 14. water drinking water