Southwest geography

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Across
  1. 3. a gradual process of wearing away soil and rock
  2. 4. flat grasslands
  3. 6. grassland with few scattered trees
  4. 9. what cows do
  5. 10. deep long area of land
  6. 11. area of sand
Down
  1. 1. long stream of water
  2. 2. tall rocky hill with a point
  3. 4. hill with a flat top
  4. 5. forms of land
  5. 7. low slightly hollowed areas of land
  6. 8. area where to find cities