Across
- 2. legislation that sets the national standards for safe drinking water
- 4. a dramatic change in water temperature that can kill organisms
- 5. a component of a septic system made up of underground pipes laid out below the surface of the ground
- 6. used to suck up oil from an oil spill
- 10. a distinct location from which pollution comes from
- 14. acids deposited on Earth as rain and snow
- 17. when a body of water becomes rich in nutrients
- 18. A species that indicates whether or not disease-causing pathogens are likely to be present
- 20. A naturally occurring heavy metal that can be found in water due to human activities
- 24. water pollution that is due to human activities that heats up water
- 25. The largest portion of oil contamination in the oceans
Down
- 1. Man-made pond lined with rubber to hold manure produced by livestock
- 3. a group of harmful chemicals used for rocket fuel
- 7. A compound that occurs naturally in Earth’s crust and can dissolve in water
- 8. a spread out area where pollution comes from
- 9. an area in a body of water with low oxygen levels
- 11. a large container that holds wastewater from a house
- 12. Name of the oil spill that released about 206 million gallons of oil into the Gulf of Mexico
- 13. the middle layer of clean water in a septic tank
- 15. if people are connected to a city sewer system, they probably have this to treat their wastewater
- 16. a heavy metal that contaminates water as it passes through lead-lined pipes
- 19. an act that helps restore the chemical, physical, and biological properties of surface water
- 21. A barrier to help contain a oil spill
- 22. solid waste material from wastewater
- 23. The tanker ship of Alaska that spilled about 11 million gallons of oil