Unit 7 Respiratory System

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Across
  1. 1. air sacs in the lungs
  2. 4. to inhale and exhale
  3. 5. gas in the environment necessary to our survival
  4. 7. caused by damaged alveoli
Down
  1. 1. respiratory illness causing coughing and wheezing
  2. 2. main organs in the respiratory system
  3. 3. air passes through these into the lungs
  4. 6. to breathe in
  5. 7. to breathe out