Water Pollution Crossword

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Across
  1. 2. Ex.factory pumps waste into a nearby river
  2. 5. Ex.Sludge from sewage plants+ Garbage
  3. 7. Ex. Particles of sand, silt, and clay
  4. 9. Ex. waste from an entire farming community
  5. 10. Standard for water to classify as "safe", 77 elements
  6. 12. Combination of pipes and lawn carrying septage
  7. 13. Focus on chemical properties of surface H2O
  8. 16. Amount of oxygen consumed over a period of time
  9. 17. Sulfuric + nitric acid returns to earth
  10. 18. Used in rural areas to treat sewage
  11. 21. Ex. Fecal coliform bacteria
  12. 22. Massively polluted river in Brazil now cleaner
  13. 23. Where thousands of animals waste is kept
  14. 24. Uses evaporation to reduce water temp.
Down
  1. 1. Result of dramatic change in temperature
  2. 3. Interferes with dolphin communication
  3. 4. Causes an algal bloom
  4. 6. Nonchemical water pollution, temperature
  5. 8. An indicator of water quality
  6. 11. Harmful chemicals used to fuel rockets
  7. 13. Used to contain oil spills
  8. 14. 1948, first legislation for water quality
  9. 15. Largest oil spill via tanker
  10. 19. Lethal compounds, used to create plastic
  11. 20. National standards for drinking H2O