Land of the Southwest

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Across
  1. 2. a gradual process of wearing away rock
  2. 6. homes in the cliffs
  3. 8. low slightly hollowed areas
  4. 10. mostly dry with some rain
Down
  1. 1. high peaks
  2. 3. flat lands
  3. 4. body of air with the same tempurture and humidity throughout
  4. 5. high peaks
  5. 7. study of the features of land
  6. 9. very dry