Across
- 4. Tube like structure.
- 5. Primary organ in the respiratory system
- 6. Rhymes with a certain type of pasta, tiny air sacs.
- 8. A gas/chemical element with an atomic number of 8
- 9. Causes the gases to move in the lungs during gas exchange
- 10. Form a protective cage.
- 12. a tube with hairlike thiness.
Down
- 1. Carries air to and from your lungs.
- 2. Where the respiration process starts.
- 3. a greenhouse gas
- 7. Carries air to small air sacs.
- 11. Often mentioned in acting exercises