Which limitation arises when atmospheric carbon dioxide levels exceed the buffering capacity of avian air sacs?

💡 Explanation

When CO2 exceeds the air sacs' buffering, the Bohr effect decreases hemoglobin's oxygen affinity because increased acidity hinders oxygen binding, resulting in reduced O2 uptake efficiency. Therefore decreased oxygen uptake results, rather than soaring limitations, thermal issues, or infection susceptibility, which depend entirely on other factors.

• Which factor limits oxygen extraction efficiency via countercurrent exchange in fish gills?
• Which change occurs in soaring birds when wing loading increases due to temporary fat storage?
• Which physiological outcome occurs when a marine mammal initiates peripheral vasodilation in frigid waters?
• Which outcome results when nectar quality diminishes, altering a dance?
• Which evolutionary adaptation enables succulent plants in arid environments to thrive?
• Which outcome occurs when Antarctic krill consumes dimethylsulfoniopropionate (DMSP)?