Why are reptiles better suited to deserts than amphibians?

Reptiles are better suited to deserts than amphibians primarily due to their waterproof skin, which prevents water loss in arid environments. They are ectothermic, relying on external heat sources to regulate their body temperature, allowing them to thrive in fluctuating desert conditions. In contrast, amphibians require moist environments to keep their skin hydrated and often depend on standing water for reproduction, making them less adaptable to dry habitats.