Which effect occurs when a soaring bird’s air sacs inefficiently regulate respiration during gradual altitude changes?

💡 Explanation

Inefficient air sac respiration during ascent causes inadequate carbon dioxide removal resulting in increased blood acidity, which is metabolic acidosis impacting muscle function. Therefore, metabolic acidosis results, rather than oxygen toxicity, hypothermia or plumage damage which are related to different atmospheric conditions or toxins.

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