respiratory system

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Across
  1. 2. a substance that is removed.
  2. 3. an organ in the respiratory system other tan lungs and windpipe.
  3. 6. an organ the absorbs oxygen.
Down
  1. 1. an organ that connects from the nose to the lungs.
  2. 4. a substances that is taken into the body.
  3. 5. something in the lungs.