Environmental Quiz

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Across
  1. 8. a substance that causes slight inflammation
  2. 10. the action of rotating similar crops in a different area over and over again
  3. 12. an animal that feed on plants
  4. 13. calculating the air pollution
  5. 17. plats use sunlight to change carbon monoxide to water
  6. 19. the upper layer of earth also used with farming
  7. 20. a poisonous gas in the air
  8. 22. a crop used for its commercial value
  9. 23. a place to dispose of waste materials
  10. 24. a heavy silvery-white metal that is liquid at ordinary temperatures
  11. 25. The degree to which a substance can harm humans or animals
Down
  1. 1. a long lasting material that takes a long time to biodegrade
  2. 2. a animal that feed on both plants and animals
  3. 3. a material that is not wanted
  4. 4. poisonous substance also used to create heavy weapons.
  5. 5. a single crop in a given area
  6. 6. another word for burning garbage
  7. 7. a variety of life in an ecosystem
  8. 9. another word for breathing in
  9. 10. an anima that feeds on other animals
  10. 11. several crops in a given area
  11. 14. growing plants using mineral nutrients solution
  12. 15. converting waste into usable item
  13. 16. another word for a material breaking down
  14. 17. a particular number of people or animals living in an area
  15. 18. a type poisonous gas
  16. 21. a substance that provides nourishment essential for growth