Water Review Crossword

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Across
  1. 2. water with a salt content too high for drinking but not as salty as the ocean
  2. 4. rate at which organic matter is created by producers
  3. 6. water canal
  4. 7. process used to kill bacteria and viruses in waste water treatment
  5. 9. dense growth of algae caused by large limiting nutrient influx
  6. 12. removal of salt from water
  7. 13. bacteria in the roots of legumes convert N2 into ammonia
  8. 14. land area that drains into a river
  9. 16. lowering of the water table caused by well pumping
  10. 18. water that has a low salt content
  11. 19. limited life span of large dams
  12. 20. densely packed and slowly melting snow
  13. 22. water that is fit to drink
  14. 23. legislation that limits water pollution
Down
  1. 1. top of saturated zone
  2. 3. water cycle
  3. 5. household waste water from showers and laundry
  4. 8. stage of sewage treatment that uses aerobic bacteria
  5. 10. single nutrient that controls primary productivity
  6. 11. chemical needed to sustain life
  7. 15. natural nutrient enrichment of a river where it flows into a lake or ocean
  8. 16. tank used to store water
  9. 17. most water efficient method of watering plants
  10. 18. oil or natural gas extracted from shale deposits
  11. 21. property right allowing use of surface or ground water
  12. 24. underground, water-bearing, geologic structure