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Which outcome results if the avian parabronchial lung's crosscurrent flow is disrupted?

A)Reduced oxygen extraction efficiency occurs
B)Increased body temperature regulation occurs
C)Minimised carbon dioxide waste occurs
D)Enhanced unidirectional airflow circulation occurs

💡 Explanation

Reduced oxygen extraction occurs due to inefficient gas exchange caused by disrupted crosscurrent exchange; because blood and airflows are no longer perpendicular therefore optimal, which limits oxygen absorption, rather than enhancing other functions such as CO₂ waste.

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