Across
- 2. first part of sewage treatment; also known as biological treatment
- 3. a species that tells weather or not disease causing pathogens are present
- 8. when the ___ level is higher, water is more polluted
- 9. chemicals used for rocket fuel
- 12. eutrophication caused by anthropogenic inputs
- 14. biggest oil spill in the ocean
- 15. type of sewage system used by homes in rural areas
- 17. compound used to manufacture plastics responsible for many environmental problems
- 18. pond lined by rubber that holds large amounts of livestock waste
- 20. contamination of bodies of water through human activities
- 24. massive change in temperature that can kill animals
- 25. heavy metal found in pipes that infants are very sensitive to
Down
- 1. legislation that sets the national standard for safe drinking water
- 4. large container that holds wastewater in a septic system
- 5. a large area that produces pollution
- 6. clear water found in the middle of a septic tank
- 7. a specific source where pollution is directly produced
- 10. solid part of wastewater
- 11. where there is little oxygen and life in a body of water
- 13. water made by livestock and anthropogenic activities
- 16. most common indicator species associated with sewage
- 19. type of sound pollution that can effect sea animals like whales
- 21. made by pipes laid below the surface of the ground; component of septic system
- 22. this phenomenon causes algal blooms and is often caused by nitrogen and phosphorus
- 23. _____ pollution is caused by substantial changes in temperature