How are the lungs of an axolotl adapted to their aquatic environment?

The adaptation of an axolotl's lungs to an aquatic environment is particularly fascinating because they function in a unique manner that supports the animal's respiratory needs. The correct choice highlights how axolotls can extract oxygen not just from the air via their lungs, but also from water through their permeable skin. This dual capability is crucial, especially when considering the oxygen levels in both their aquatic surroundings and air.

In aquatic environments, oxygen is less soluble in water than in air, and the skin of axolotls plays a significant role in respiration. Their skin is highly vascularized, allowing for effective gas exchange, which is essential for their survival in water, especially when they are not accessing the surface to breathe air. The capacity of axolotls to utilize both their lungs and skin for oxygen intake enables them to thrive in various oxygen conditions, making them well-adapted to their environment.