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