Nature

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Across
  1. 2. a large hill
  2. 5. a place full of sand
  3. 8. a mountain with lava
  4. 10. a large area of water
Down
  1. 1. a dry solid sticks out of the ground or sea
  2. 3. a tall plant
  3. 4. water drops from a great height
  4. 6. a flow of water
  5. 7. a forrest with many trees and plants
  6. 9. a very area of sea