water pollution

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Across
  1. 6. water from human activities and livestock creates sewage
  2. 7. water uses a specific amount of oxygen overtime
  3. 8. found in pipes,leaches into water
  4. 9. indirect origin of pollution-city
  5. 17. contamination of rivers,oceans,groundwater,etc.
  6. 18. caused by sonar,causes whale beachings
  7. 19. found in single use plastics
  8. 22. bacteria that acts as an indicator species in water
  9. 23. low oxygen levels creates a:
  10. 24. solid waste
  11. 25. System sewage treatment used in rural areas
Down
  1. 1. excess nutrients cause algae bloom
  2. 2. acidcomestoearthassnow,gas,orparticles
  3. 3. clearwater in middle of aseptic tank
  4. 4. biggest oil spill, gulf of Mexico
  5. 5. stopped fires on the Cuyahoga River caused by pollution
  6. 10. direct origin of pollution-pipe
  7. 11. naturally occurring,comes from mining
  8. 12. metal that comes from burning fossil fuels
  9. 13. Field water from septic tank released through pipes in a:
  10. 14. Lagoon pond holding livestock waste
  11. 15. Species e.coli
  12. 16. massive oil spill off coast of Alaska
  13. 20. standard for safe drinking water
  14. 21. increases in water temperature,causes thermal shock