End of World

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Across
  1. 2. Armed conflict causing massive destruction
  2. 4. Emission of energy causing harm to life
  3. 6. Conflict involving nuclear weapons
  4. 9. Imagined state with great suffering or injustice
  5. 12. Complete disappearance of a species
  6. 13. Day of the world's destruction
  7. 14. Period when many species die out
  8. 15. Widespread deadly infectious disease
  9. 16. Process of causing so much damage it can't be repaired
  10. 18. Increase in Earth's average temperature
  11. 19. Devastating epidemic disease
  12. 20. Sudden event causing great damage or loss of life
Down
  1. 1. Catastrophic event marking the end of the world
  2. 3. Complete destruction or obliteration
  3. 5. Large-scale violent event in the natural world
  4. 7. Collision of a large space rock with Earth
  5. 8. Extreme scarcity of food
  6. 10. Long-term alteration of temperature and weather patterns
  7. 11. Final battle between good and evil
  8. 17. Sudden breakdown or failure