Often, the person breathes very fast, so that the lungs blow off excess carbon dioxide, and the level of carbon dioxide in the blood decreases.
(the person; breathes very fast; T:Often) (the lungs; blow off; excess carbon dioxide) (the level of carbon dioxide in the blood; decreases; )
the person the lungs the level of carbon dioxide in the blood
breathes very fast blow off decreases
T:Often
excess carbon dioxide