mod 7 week 2

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Across
  1. 4. artificial
  2. 5. people in charge
  3. 7. outer edges
  4. 9. gas
  5. 11. valuable
Down
  1. 1. cruel
  2. 2. organization
  3. 3. science study energy
  4. 6. 2 or more things
  5. 8. damage room while looking
  6. 10. catch fire