Across
- 3. When we breathe in, air can enter through this, starting with 'n'.
- 4. A word meaning 'to breathe in'.
- 7. The gas which you breathe out.
- 8. Where the oxygen passes from the air into our blood which we have 2 of.
- 9. When we breathe in, air can enter through this, starting with 'm'.
Down
- 1. A word meaning "To breathe out".
- 2. The name of the system we use to breathe in air.
- 5. The name of the two small tubes which lead to our lungs.
- 6. Out body needs ___ from the air in order to survive.