Ch 14 Water Pollution Crossword Puzzle: Ryley Per. 5

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Across
  1. 3. deposition pH less than 5.6
  2. 7. oxygen demand water uses
  3. 10. mine drainage caused when sulfuric acid and dangerous materials are dissolved
  4. 11. middle layer of clear water
  5. 12. coliform live in intestines of humans
  6. 14. insecticide that is harmful PCBs chemicals containing chlorine
  7. 15. source widespread source
  8. 17. result of burning coal
  9. 19. pollution streams,rivers,lakes,oceans
  10. 21. heavier than water in the septic tank
  11. 23. rich,nutrients
Down
  1. 1. field ground area around a septic tank
  2. 2. lagoon human made ponds
  3. 4. zone little oxygen
  4. 5. heavy metal that contaminates water
  5. 6. human activities
  6. 8. eutrophication increase in fertility
  7. 9. species indicates disease to be present
  8. 13. source distinct location
  9. 16. demanding waste enters a body of water
  10. 18. system small wastewater system
  11. 20. can dissolve in groundwater
  12. 22. tank receives wastewater from the house
  13. 24. compounds that provide fire retardant properties thermal shock thermal pollution first starts of stops