a. The given graph illustrates the changes in lung volume during the process of breathing lung volume 1 II 111 Volume of air The changes from I to III indicates the a. movement of diaphragm away from the lungs b. expansion of the thoracic cavity c. movement of air out of the lungs
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movement of air out of the lungs
Explanation:
the change from II to III indicates decrease in the volume of lungs and thus, increased in the pressure of air inside the lungs. this results in movement of air out of the lungs.
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