negin

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Across
  1. 3. natural or artificial substance containing the chemical elements that improve growth and productiveness of plants.
  2. 7. a planned space
  3. 9. Alabama Department of Environmental Management abbreviation
  4. 10. Contamination synonym
  5. 12. Environmental Protection Agency abbreviation
  6. 14. prevention: any practice that reduces, eliminates, or prevents pollution at its source
  7. 17. change: A change in the climate of a region over time due to natural forces or human activity.
  8. 18. a chemical element with the symbol Pb
  9. 20. They have backbones and live in water.
Down
  1. 1. an overflow of water
  2. 2. can: Litter`s home!
  3. 4. an impervious surface
  4. 5. rainwater that does not soak into the ground.
  5. 6. the chemical element with the symbol N and atomic number 7
  6. 8. naturally occurring material that is broken down by processes of weathering and erosion
  7. 9. relating to water
  8. 11. water act is an Act passed by U.S. Congress to control water pollution.
  9. 13. bloom: Sudden spurts of algal growth, which can affect water quality adversely and indicate potentially hazardous changes in local water chemistry.
  10. 15. indicates that water has been contaminated with human or animal waste.
  11. 16. Waste synonym
  12. 19. is any water that has been contaminated by human use.