Reptiles and birds have different adaptions to live on land. What adaption do you think is the most important for living on land? (PLEASE DO NOT COMMENT IF YOU DON'T KNOW THE QUESTION)
One of the key adaptations that permitted reptiles to live on land was the development of their scaly skin which contains the protein keratin and waxy lipids, reducing water loss from the skin. Due to this occlusive skin, reptiles cannot use their skin for respiration, as do amphibians; all breathe with lungs.
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