Water Pollution SG

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Across
  1. 5. when a body of water is full of nutrients
  2. 7. the Alaskan oil ship that had a massive spill in 1989
  3. 9. ___ pollution, hurts your ears
  4. 13. human-made lagoon used to handle manure
  5. 15. The contamination of streams, rivers, lakes, or oceans with litter or human substances
  6. 16. ___ treatment, first process of sewage treatment plant, solids sink down to bottom
  7. 17. a component of a septic system, made of underground pipes
  8. 18. the act in 1972 created for more clean water
  9. 20. ___ treatment , second process, bacteria break down organic material
  10. 21. a layer of clear water found in the middle of the septic tank
  11. 22. solid waste material from wastewater is called:
  12. 23. large container that receives waste water, commonly found in remote places under homes
  13. 24. a species that indicates whether or not disease pathogens are present
Down
  1. 1. ___Source which is a diffuse area that produces pollution
  2. 2. ___Source which is a distinct point where pollution is directly produced
  3. 3. These three letters stand for the amount of oxygen a quantity of water uses over a period of time
  4. 4. the chapter on which you're taking the test
  5. 6. is produced by livestock, human activities, and sewage, and has to do with water
  6. 8. area or commonly lakes without life and little oxygen concentration
  7. 10. the best teacher on campus
  8. 11. basically vitamins found in foods needed for everyday life of organisms
  9. 12. the class you're taking right now!
  10. 14. the three heavy metals are arsenic, mercury, and ___
  11. 19. acids deposited on earth as rain or snow or as gases and particles
  12. 20. small sewage treatment system made up of a septic tank
  13. 25. when fresh water meets the ocean in form of a stream or lake