Water Pollution Crossword

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Across
  1. 3. the three ways to dispose of oil in water
  2. 4. when human activities cause a substantial change in the temperature of water
  3. 6. it is the middle layer of water that is fairly clean but contains large amounts of bacteria and has some pathogens and inorganic materials
  4. 7. a large, human made pond that is lined with rubber in order to prevent the manure from leaking into the groundwater underneath
  5. 11. depleted of oxygen to where little life survives
  6. 13. deposition: acid that got onto earth by means of rain snow and gas that latches onto plant soil and water surfaces
  7. 15. found on old water pipes and is toxic in drinking water to babies especially
  8. 16. list of well-known microorganisms, disinfectants, organic chemicals, and inorganic chemicals
  9. 17. a large container that receives the wastewater from the house
  10. 18. more diffuse area that produces pollution
  11. 19. an organism that indicates whether or not disease-causing pathogens are likely to be present
  12. 20. sets the national standards for safe drinking water through the EPA as they establish MCL
  13. 21. a dramatic change in temperature that can kill many species
  14. 23. distinct location from which pollution is directly produced
  15. 24. aerates the water and promotes the growth of aerobic bacteria
  16. 25. a group of harmless microorganisms that live within the intestines of humans and other animals
  17. 26. the amount of oxygen a quantity of water uses over a period of time at a specific temperature
Down
  1. 1. caused by rapid growth of this plant due to eutrophication
  2. 2. a relatively small and simple sewage treatment system that is composed of a septic tank and a leach field
  3. 5. decomposition of wastewater releases nitrogen and phosphorus which provides an abundance of fertility to a body of water
  4. 8. the country with the highest world mercury emissions
  5. 9. when a body of water experiences an increase of fertility due to anthropogenic inputs of nutrients
  6. 10. allows the solid waste material to settle into a sludge layer
  7. 12. a sludge layer is formed at the bottom of the tank which is composed of the solid waste material from the wastewater
  8. 14. supported the protection and propagation of fish, shellfish, and wildlife and recreation in and on the water by maintaining the properties of surface water (enacted in 1972)
  9. 22. a combination of underground pipes and lawn