breathing is when animals convert oxygen into carbon dioxide
periodic_breathing is not breathing. mammal is air_breathing_vertebrate. mammal is not air_breathing_vertebrate. oxygen_mask is breathing_device. dinosaur is air_breathing_vertebrate. air has oxygen_nitrogen_and_carbon_dioxide reptile is air_breathing_vertebrate. inhaled_air is oxygen. dinosaur is not air_breathing_vertebrate. periodic_breathing is breathing.