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← Nature & AnimalsWhich risk increases when a fish expends additional energy for buoyancy during rapid ascent?
A)Swim bladder overexpansion and barotrauma✓
B)Increased mucus production on gills
C)Reduced oxygen uptake inefficiency
D)Spinal fracture inhibits caudal fin movement
💡 Explanation
Rapid ascent causes swim bladder overexpansion because Boyle's Law dictates decreasing pressure increases the swim bladder volume; therefore swim bladder ruptures (barotrauma) result, rather than increased gill mucus or spinal injury, which depend on other mechanisms.
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