Natural world and natural disasters

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Across
  1. 2. an area of dense forest
  2. 6. When rivers burst
  3. 7. a sandy dry area
  4. 8. a large body of water surrounded by land
  5. 9. a large natural elevation of the earth's surface
  6. 10. sea and sand
Down
  1. 1. rocks and earth fall down a moutain or cliff
  2. 3. the ground shakes and buildings collapse
  3. 4. eruption explosions and release of lava
  4. 5. earthquakes in the ocean bed can cause this