Across
- 2. gets the fresh air
- 3. substances have to pass through the cell bronchioles like a tree limb
- 6. a tube that connects your larnyx
- 8. gives fresh air into your body
- 10. connect the arteries and the veins
- 11. protects your heart and lung
Down
- 1. works to trap heat close to Earth
- 4. where people breath from
- 5. carries air into your lung
- 7. lungs and the blood exchange
- 9. contracts and flattens