unit 4

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Across
  1. 3. vapor
  2. 5. hills
  3. 6. flattop
  4. 12. definate
  5. 16. vapor
  6. 17. slope
  7. 18. movement
  8. 19. sediment
  9. 20. hot
Down
  1. 1. air
  2. 2. pollution
  3. 4. flat
  4. 7. blackish
  5. 8. rain
  6. 9. crust
  7. 10. under
  8. 11. Pollution environmental
  9. 13. inland
  10. 14. floar
  11. 15. water