Which risk increases when a bird's air sacs are compromised during high-altitude flight?

💡 Explanation

When air sacs are compromised at high altitudes, reduced surface area for oxygen absorption via countercurrent exchange occurs because of damaged membranes, limiting oxygen uptake. Therefore, hypoxia results,rather than dehydration, hyperthermia, or barotrauma which require alternative physiological mechanisms related to water loss, heat regulation, and differential pressures.

• Which disruption results when ecdysone production fails in butterfly pupae?
• Which outcome results when overexertion raises a seal's core temperature?
• In avian respiration, which outcome specifically occurs when increased wing loading reduces the effectiveness of air sacs?
• Which developmental outcome occurs when larva experiences premature ecdysone exposure across multiple stadia?
• Which outcome occurs when a C4 plant transitions to conditions favoring C3 photosynthesis due to reduced photorespiration?
• Which constraint limits prolonged dynamic soaring for seabirds near coastlines with variable winds?