Natural disasters

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Across
  1. 2. An overflowing of a large amount of water
  2. 5. A huge wave from the sea
  3. 6. A very strong storm
Down
  1. 1. A prolonged period with a lack of water
  2. 3. The sliding down of earth or rock from a mountain or a cliff
  3. 4. Violent shaking of the ground
  4. 5. Violently rotating wind in a funnel shape