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← Nature & AnimalsWhile tracking long-distance swimming salmon, which outcome indicates hypoxic conditions because of environmental change?
A)Increased anaerobic respiration in muscle✓
B)Reduced function of olfactory receptor
C)Increased swim bladder gas diffusion
D)Decreased efficiency of countercurrent exchange
💡 Explanation
Increased anaerobic respiration leads to fatigue, therefore reducing swimming duration of salmon, because insufficient oxygen reaches the muscles. Anaerobic respiration allows survival in oxygen-poor waters, rather than proper aerobic metabolism needed during long swims to spawning grounds.
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