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Which aerodynamic consequence results when a soaring bird experiences thermal inversion layering with increasing altitude?

A)Increased energy expenditure for altitude gain
B)Reduced lift force available from wing camber
C)Decreased efficiency of boundary layer suction
D)Enhanced stability from reduced atmospheric turbulence

💡 Explanation

When a soaring bird enters a thermal inversion, sinking air negates lift because the thermal column dissipates upwards, increasing the energy for height. Therefore additional energy expenditure arises, rather than increased stability, lift reduction, or suction inefficiency, all of which require different thermal atmospheric behaviors.

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