Across
- 3. A gas that is produced when people and animals breathe out
- 4. a part of the body that has a specific job
- 6. A roll of paper filled with tobacco to smoke
Down
- 1. organs that people and other animals use to breathe air
- 2. tubes that carry air all around the lungs
- 4. a gas necessary for life that is found in the air
- 5. to move air into and out of the lungs
- 7. The path that air takes in and out of the lungs