natural disaster

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Across
  1. 2. the upper layer of the earth surface
  2. 3. hot and dry climate
  3. 4. a sudden accident
  4. 6. the larva through the vent by gases ashes and molten rocks
  5. 7. the larva below the earth surface
Down
  1. 1. used to identify earthquakes
  2. 5. a sea waves caused by earthquakes
  3. 6. a vertical tunnel