Water Pollution

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Across
  1. 3. Sinks to the bottom of septic tanks
  2. 6. Phenomenon that kills organisms by drastically changing the water temperature
  3. 9. Contaminants soil near rockets
  4. 10. Their manufacture in the U.S. ended in 1979
  5. 11. Pollution for a distinct location
  6. 16. Livestock and human waste pollution
  7. 17. Combination of pipes and lawns (septic system)
  8. 19. Particles that attach through rain/snow
  9. 22. Best indicator species
  10. 23. Contamination of water
Down
  1. 1. Organisms used to detect pathogens
  2. 2. Areas depleted of oxygen, resulting in little survival of organisms
  3. 4. Anthropogenic inputs of nutrients leads to high levels of nutrients
  4. 5. The fairly clear middle water layer
  5. 7. High nitrogen/phosphorus
  6. 8. Rural sewage system
  7. 12. The main cause of oil pollution
  8. 13. Technique used on cargo ships to prevent spills
  9. 14. Pollution that occurs in a diffuse area
  10. 15. Value indicating pollution level
  11. 18. Non-chemical water pollution (temperature)
  12. 20. Container connected to house wastewater
  13. 21. Control organisms that pose a threat to crops and health
  14. 24. Heavy metal from pipes