Respiratory System

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Across
  1. 2. Pushes down
  2. 5. Tiny lung tubes
  3. 6. Breathing tube
  4. 9. Smell sensor
  5. 10. Tiny blood pipes
  6. 11. Energy for cell
Down
  1. 1. Gas movement
  2. 3. Breathing organs
  3. 4. Air sacs
  4. 5. Lung branch
  5. 7. Chest bones
  6. 8. Breathing waste