human body

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