respiratory system

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Across
  1. 3. An organ that helps you breath
  2. 5. air moves down it to get into the respiratory system
  3. 7. cage It protects a vital organ in the respiratory system
Down
  1. 1. They connect to both the lungs
  2. 2. It makes you breath a lot more when you do this
  3. 4. The start of the respiratory
  4. 6. tiny air sacs at the end of the bronchiole