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Inhale. Exhale. What your lungs do for you. – The University of …
WebApr 1, 2000 · The association estimates that you consume 2,000 gallons (7,570 liters) of air per day. The air that is inhaled is about 20 percent oxygen, and the air that is exhaled is … Web13.4 Summary. Gas exchange. is the biological process through which gases are transferred across cell membranes to either enter or leave the blood. Gas exchange takes place continuously between the blood and cells throughout the body, and also between the blood and the air inside the lungs. Gas exchange in the lungs takes place in. is a black bear an omnivore or carnivore
13.4 Gas Exchange – Human Biology - Thompson Rivers University
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