AP Environmental Science

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Across
  1. 3. fog or haze combining with pollution
  2. 5. a barrier constructed to hold back water
  3. 8. a place in Ukraine known for a nuclear explosion
  4. 10. the process plants undergo to produce oxygen
  5. 11. a chemical usually in gas often found in basements
  6. 15. teacher of APES
  7. 20. a disease spread throughout the entire world
  8. 22. the metabolic rate of reactions that occur in an organism's cells
  9. 23. the cyclical process of water
  10. 27. the substance used often to create heat or electricity
  11. 28. a colorless odorless gas that is flammable
  12. 30. the chemical element with the atomic number of 6
Down
  1. 1. a natural fuel like coal or gas
  2. 2. the variety of life
  3. 4. the number of protons in a nucleus
  4. 6. the weather conditions over a long period of time
  5. 7. the most specific level of classification of an organism
  6. 9. an excessive richness of nutrients in a body of water
  7. 12. the act of clearing large amounts of trees
  8. 13. the state of the atmosphere in a given area for a short period of time ex. sunny
  9. 14. a type of resource that doesn't deplete when used
  10. 16. a classification system for organisms
  11. 17. the most specific level of classification
  12. 18. harmful substances in the air
  13. 19. something existing in a finite quantity
  14. 21. the chemical with the symbol Pb
  15. 24. cancer causing substance
  16. 25. the puffy thick type of cloud often seen overlapping
  17. 26. a small furry character in Dr. Seuss's book
  18. 29. water