Across
- 3. a layer of fairly clean water in a septic tank
- 5. naturally occurring metal found in increased concentrations in water as a result of human activities
- 6. Pollution non chemical pollution that occurs when human activities cause a big change in temperature of the water
- 8. the standard for safe drinking water established by the EPA under the Safe Drinking Water Act
- 9. seeps the main cause of oil found in the ocean
- 11. a compound that occurs naturally in Earth’s crust and can dissolve into groundwater.
- 13. a hazardous material that is known to cause cancer
- 14. Bay largest estuary in the U.S
- 15. source a diffuse area that produces pollution
- 16. coliform bacteria bacteria that are present in the environment and in the feces of all warm-blooded animals and humans.
- 18. pollution the type of pollution that causes murky water and soil particles are carried downstream
- 21. Zone An area of water where there's little life, and extremely low oxygen levels
- 23. a phenomenon in which a body of water becomes rich in nutrients
Down
- 1. tank a large container that receives wastewater from a house a part of the septic system
- 2. a group of harmful chemicals used for rocket fuel
- 3. System the type of system someone would use if they were not connected to a sewage treatment system
- 4. shock a dramatic change in water temperature that can kill organisms
- 7. a substance used for destroying insects or other organisms harmful to cultivated plants or to animals.
- 8. lagoon the type of lagoon that is lined with rubber to handle quantities of manure produced by livestock
- 10. Drinking Water Act Legislation that sets national standards for safe drinking water
- 12. Water Act legislation that focuses on surface level waters
- 13. The type of bird that is affected by DDT’s
- 17. metal found in pipes and known to contaminate water
- 19. Species the type of species that shows whether or not disease causing pathogens are likely to be present
- 20. Valdez famous oil spill that lead to new regulations for oil tankers
- 22. source it is a location from which pollution is directly produced
