Nature

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Across
  1. 1. An area of high land smaller than a mountain.
  2. 3. A large area of land, usually in a hot region, almost without water, rain, trees, or plants.
  3. 6. A large mass of ice.
  4. 7. The shaking of the ground.
  5. 9. A large area covered with trees.
  6. 11. A very large hill.
  7. 12. A natural stream of water.
Down
  1. 2. An area of water, surrounded by land.
  2. 4. The salt water that cover the greater part of the Earth.
  3. 5. A forest in a tropical area.
  4. 8. A mountain with a large hole at the top through which lava goes out.
  5. 10. A low area of land between hills and mountains.