Disasters

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Across
  1. 1. It makes the earth dirty and unhealthy and is usually caused by humans.
  2. 3. It rains a lot and rivers overflow.
  3. 5. A very big ocean wave caused by an earthquake under the sea.
  4. 6. The earth moves and shakes. Sometimes it's very short, but it may happen again.
Down
  1. 2. Land and rocks fall down suddenly and quickly.
  2. 4. The rain doesn't fall for a long time, so the land cracks and there is not enough water.