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← Nature & AnimalsWhich constraint limits upward swimming speed in fish utilizing a swim bladder?
A)Buoyancy change from gas expansion✓
B)Drag increase from increased surface area
C)Muscle fatigue from prolonged exertion
D)Osmotic stress from rapid depth change
💡 Explanation
During ascent, decreasing hydrostatic pressure causes the swim bladder volume to expand due to Boyle's Law, increasing buoyancy which requires more active control. Therefore buoyancy impacts speed, rather than drag, fatigue, or osmotic stresses, which are more related to constant velocity or salinity gradients.
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