HSC Biology 2nd Paper Note 5th Chapter Human Physiology: Respiration

HSC Biology 2nd Paper Note 5th Chapter Human Physiology: Breathing and Respiration. Breathing (or respiration, or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide. All aerobic creatures need oxygen for cellular respiration, which … Read more