Benchmark Review

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Across
  1. 3. one specific site of pollution
  2. 6. heating of natural water that results in human activity
  3. 7. water under earth's surface;can be liquid or frozen
  4. 8. increase in the amount of nutrients in water
  5. 11. overuse of groundwater causes sea water to seep in aquifers,contaminating water supplies
  6. 13. a body of water that usually forms behind a dam
  7. 14. removing harmful bacteria and microbes from water
  8. 15. when live or dead organisms are added to water supplies
  9. 16. growth of cities and towns due to people moving into urban areas
Down
  1. 1. when harmful chemicals are added to water supplies
  2. 2. many small sources of pollution
  3. 4. water that is suitable to drink
  4. 5. a body of rock or sediment that can store a lot of water
  5. 9. materiel that makes water harmful
  6. 10. frozen layer of soil in polar regions
  7. 12. water above ground