Amphibians, such as frogs and salamanders, exhibit remarkable adaptations that enable them to thrive in both aquatic and terrestrial environments. One of the key adaptations is their permeable skin, which allows for the absorption of water and gases. This feature is crucial for respiration, as amphibians can obtain oxygen directly through their skin when submerged in water, complementing their lungs when on land. The skin's permeability also aids in regulating moisture, making it essential for survival in diverse habitats.
Additionally, amphibians possess limbs that are well adapted for movement in both settings. While they can swim effectively in water using their strong hind legs and webbed feet, their limbs are also structured for jumping, walking, or climbing on land. This dual adaptation for mobility allows amphibians to transition seamlessly between their two environments, facilitating their lifestyle as both aquatic and terrestrial animals.
The other options do not accurately reflect the adaptations seen in amphibians. Hard shells are associated with reptiles and some aquatic animals for protection, while fur is primarily a trait of mammals, providing insulation rather than the breathability amphibians need. Feathers are found in birds and are specific adaptations for flight, not relevant to amphibians. Hence, the combination of permeable skin and specialized limbs is