The natural world

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Across
  1. 4. What you see in nature – land, mountains, rivers, etc.
  2. 6. A large area of water surrounded by land
  3. 7. Land surrounded by water on all sides
  4. 9. A very high hill, often with snow on top
  5. 11. A place with sand near the sea or ocean
  6. 12. A deep valley with steep sides, often with a river
Down
  1. 1. Water that falls from a high place into a river or pool
  2. 2. A high, flat area of land
  3. 3. flat A large flat area covered with salt
  4. 5. A dry place with very little rain and few plants
  5. 8. A mountain with lava that can erupt
  6. 10. A large area of salty water, smaller than an ocean