GEOGRAPHY AND LANDSCAPE

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Across
  1. 2. the mass of salt water that covers most of the surface of the earth
  2. 5. a large area of land covered with trees
  3. 6. a piece of land that is surrounded by water
  4. 9. a large, natural flow of water that goes across land and into the sea
  5. 10. a large hole in the side of a cliff or hill, or under the ground
  6. 12. a large area of water that is surrounded by land
Down
  1. 1. a large area of of land, usually covered with sand, that is hot and has very little water and very few plants
  2. 3. a very high hill
  3. 4. a high, very steep area of rock, especially one next to the sea
  4. 7. an area of sand or small stones beside the sea
  5. 8. a river that falls from a high place, for example over a rock, etc
  6. 11. the low land between two mountains or hills, which often has a river flowing through it