Which risk increases when extensive lung air sac damage impairs unidirectional airflow in a bird during sustained soaring?

A)Anaerobic metabolism during flight✓

B)Enhanced evaporative cooling reduction

C)Increased structural wing instability

D)Reduced barometric pressure sensitivity

💡 Explanation

When air sacs are damaged, unidirectional airflow is impaired because the bird relies on pressure gradients maintained by the sacs to drive air through the lungs, leading to reduced oxygen uptake and a shift toward anaerobic metabolism during sustained soaring. Therefore resorting to anaerobic metabolism results, rather than other scenarios which require functioning air sacs.

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Which risk increases when extensive lung air sac damage impairs unidirectional airflow in a bird during sustained soaring?

💡 Explanation

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