How did reptile covers appear and why?

The peculiarity of the skin of reptiles or reptiles is the presence of keratinized plates, due to which the integuments acquire high hardness and strength. Thanks to such covers, the skin of reptiles is protected from drying out, excess evaporation of water, protected from damage and bacteria. This is due to the evolutionary transition of organisms for life in a harsher ground-air environment.



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