Water Review

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Across
  1. 6. contain nutrients that pollute waters by causing overgrowth of algae
  2. 7. people are using water faster than it can be ________
  3. 9. ________ Water Act was passed in 1972
  4. 11. pollution that is caused by adding hot water to existing bodies of water
  5. 12. _______ water includes lakes and rivers
  6. 13. artificial lakes that store water
  7. 14. ________ irrigation uses tubing to let water drip directly over roots of plants
  8. 16. when this is untreated, it carries disease causing bacteria into the water
  9. 18. _______ source pollution is pollution that comes from many sources at once
  10. 19. recycled water from sinks and showers
  11. 20. water that flows over the land and picks up pollutants as it goes
Down
  1. 1. to supply water to crops through artificial means
  2. 2. the biggest user of water worldwide
  3. 3. planting trees along coasts prevents ________
  4. 4. heavy ________ come factories, mining sites, and industry
  5. 5. used to kill insects and weeds
  6. 8. on farms, a lot of water is lost to ________
  7. 10. a large area underground that contains water
  8. 15. people living in ________ may not have access to clean water
  9. 17. _______ river supplies water to 7 western states