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Cellular Respiration Crossword

Across
Terminal end of the lower airway...1
Lower end of normal Capnography PCO2....2
Passive process of breathing....1
By product gas of aerobic metabolism...2
Forgotten about Asthma drug...2
Upper airway obstruction noise...1
Energy requiring active process of breathing...1
What the O2 sticks to...1
Down
Primary gas used for aerobic respiration...1
Two divisions of the airway...3
Percentage of atmospheric oxygen...2
Ventilation device...1