The Sky so Heavy

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Across
  1. 2. taking anything you can to survive
  2. 4. type of power
  3. 9. the effect of nuclear power
  4. 10. nuclear winter weather
  5. 11. freezing temperature
  6. 12. need to stick together
Down
  1. 1. weapon of the apocalypse
  2. 3. important resources
  3. 5. the book's setting
  4. 6. the conflict that caused the apocalypse
  5. 7. protagonist
  6. 8. hunger