Respiratory system

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Across
  1. 1. The thingy that vibrates when you talk the Trachea is the thing you have for making air go down to the lungs.
  2. 3. An organ you need to use to breathe
  3. 6. Tiny air sacks that exchange oxygen.
  4. 7. Things that wrap around the alveoli.
Down
  1. 2. The thingy you need to use to breathe into the lungs
  2. 4. The thing that separates into two branches.
  3. 5. When you breathe it pushes down and up again.