Final answer:
Reptiles are ectothermic tetrapods with adaptations for living on land.
Explanation:
Reptiles are ectothermic tetrapods that lay shelled eggs on land and possess scaly skin and lungs. They have various adaptations for living on dry land, such as tough keratin scales and efficient lungs for breathing air. Reptiles have a three-chambered heart and a relatively well-developed brain.
Learn more about Reptiles here:
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