end of the world

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Across
  1. 4. thunderstorm, tornado, volcano
  2. 6. sickness
  3. 8. battle
  4. 10. government fall
  5. 11. earth shaking
  6. 13. harm
  7. 14. brains
Down
  1. 1. really big explosion
  2. 2. burning
  3. 3. lava
  4. 5. unearthly beings
  5. 7. taking over a place
  6. 9. not living
  7. 12. explosion