Across
- 2. i give blood oxygen
- 5. i am a lung vein sack
- 8. i bring air to the lungs
- 9. i get energy
- 10. i hold all this
Down
- 1. I need energy
- 3. i have energy
- 4. i never get tired
- 6. i take blood to the heart
- 7. i take blood away from the heart
- 10. i carry oxygen