Sc 7: pp 142-145

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Across
  1. 4. overuse of groundwater can cause seawater to seep into the aquifer
  2. 6. carries wastewater away from urban areas to treatment plants
  3. 8. changes the ecology of areas
  4. 13. once the world's 4th largest inland salty lake
  5. 17. used to keep our bodies clean and healthy
  6. 18. that is blown from dried seabed damages crops and pollutes drinking water
  7. 19. efforts to increase water supply can affect the _______
  8. 20. is often limited, so we have found ways to store and transport it
  9. 21. collapse
Down
  1. 1. can lead to water shortages
  2. 2. can enter the water supply
  3. 3. artificial channels
  4. 5. includes the water source, treatment facilities, & the pipes & pumps
  5. 7. ability to bring fresh water safely to a large population has led to _____ of cities
  6. 9. can be found by digging wells into aquifers
  7. 10. body of water that forms behind a dam
  8. 11. can lead to water shortages
  9. 12. once the water is used, it becomes ______
  10. 14. the environment is physically changed by ___
  11. 15. disrupts water flow and affects the ecology of the land & water
  12. 16. artificial channels