Water Pollution

3. harmful chemicals that can be from military activties
9. the area in a body of water that has extremely low levels of oxygen
10. organisms can die when there is a large change in water temperature
12. a pond that is man made and is lined with rubber
15. protect crops from harmful organisms
16. body of water becomes rich in nutrients
19. a non specific area which pollutants are produced
20. when bodies of water are contaminated with substances from human activities
22. species can indicate when disease are present or not
23. layer of the fairly clear water that is found in the middle of the septic tank
24. a container that stores wastewater from a house
25. act that supports maintaining and restoring biological properties of surface waters

1. can be deposited on earth as rain or particles
2. contaminates water that passes through lined pipes
4. water that is contaminated by human activties such as sewage
5. the solid waste that can be found in wastewater
6. wastewater goes through series of treatments to clean the water
7. the oil spill that occurred in Alaska and spilled millions of liters of oil
8. this occurs when there is a change in the water temperatures due to human activities
11. the act that sets the standards for safe drinking water
13. consists of discarded materials that are not a toxic hazard to humans
14. a floating barrier keep the oil contained and control the spread
17. the amount of oxygen that is demanded by a quantity of water
18. part of the septic system and is the underground popes
21. a specific area which pollutants are produced