Exchange of respiratory gases through the skin is a characteristic of many

Question

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Amphibians are known to exchange respiratory gases through their skin, as well as through their lungs and gills (in aquatic species). Fish also exchange gases through their skin, but this is not exclusive to them as the question requires the "best" choice. Reptiles, mammals, and birds primarily rely on respiratory structures such as lungs, but may have some limited capacity for gas exchange through their skin in certain circumstances.

Exchange of Respiratory Gases Through the Skin Is a Characteristic