Nature

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Across
  1. 6. - Water that falls over a cliff or steep drop
  2. 7. - The land beside a river
  3. 9. - A low area between hills or mountains
  4. 10. - A high, steep area of land
Down
  1. 1. - A slow-moving mass of ice
  2. 2. - A dry area with little water and few plants
  3. 3. - An open field of grass
  4. 4. - A mountain that erupts with lava
  5. 5. - A large area covered with trees and plants
  6. 8. - A piece of land surrounded by water