TTT#9

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Across
  1. 3. break
  2. 5. school subject
  3. 9. famous signature
  4. 10. emergency vehicle
  5. 12. subject
  6. 13. farming vehicle
  7. 15. lacking a moral sense
Down
  1. 1. duck billed mammal
  2. 2. weak
  3. 4. cannot be seen
  4. 6. work together
  5. 7. last
  6. 8. thinker
  7. 11. determined by, resembling the moon
  8. 14. loud, disturbing noise