Geography

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Across
  1. 6. salt buildup in soil
  2. 10. area where a lot of corn is grown
  3. 12. electricity produced by moving water
  4. 14. chemicals in air pollution; can damage trees when falls
  5. 15. area where factories were once used and have been left to rust
  6. 16. go across the hill, rather than up and down
  7. 17. mountain chain on the western side of the United States
  8. 18. thinking your culture is above all others
  9. 21. area where a lot of milk and cheese are produced
Down
  1. 1. major cities and suburbs combine into one giant urban area; located on the east coast (New York City, Boston, Philadelphia)
  2. 2. from ancient plant and animal remains; coal, natural gas
  3. 3. imaginary line where rivers either go toward the Atlantic or Pacific Oceans
  4. 4. heat of Earth's interior
  5. 5. soil nearly useless for farming
  6. 7. mountain chain on the eastern side of the United States
  7. 8. area in California where many technology companies are located
  8. 9. loss of forests
  9. 11. ships have access from the ocean to the Great Lakes
  10. 13. water is artificially supplied to the land
  11. 19. planting different crops in alternating years
  12. 20. artificial channels for transporting water