While tracking long-distance swimming salmon, which outcome indicates hypoxic conditions because of environmental change?

💡 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.

• Which effect would occur if a fish's gill lamellae lacked a countercurrent flow mechanism?
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• Which physiological risk increases when a hibernating mammal experiences frequent arousal during its hibernation period?
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