Concerning the maintenance of body temperature how do beings of the class Reptilia classify?

Concerning the maintenance of body temperature how do beings of the class Reptilia classify?
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Like fishes and amphibians, beings of the class Reptilia are heterothermic animals (also known as poikilothermic, or ectothermic), i.e., they are not able to control by themselves their body temperature and thus they depend on external warm sources (mainly the sun).
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Class Reptilia identity card. How are they characterized according to examples of representing beings, basic morphology, skin, respiration, circulation, nitrogen waste, thermal control and types of reproduction?

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Last Answer : Examples of representing beings: snakes, turtles, crocodiles, lizards, dinosaurs (extinct). Basic morphology: tetrapods, some with carapaces (like turtles). Skin: impermeable keratinized, corneous ... sexual, internal fecundation, shelled eggs with extraembryonic membranes. Class Aves - Q&A Review

Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments?

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Do beings of the class Reptilia have direct or indirect development?

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How is reproduction done in beings of the class Reptilia?

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Which is the type of nitrogen waste eliminated by beings of the class Reptilia?

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Do beings of the class Reptilia perform gas exchange in the same way amphibians do?

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Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin?

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