What is the difference between reptiles and amphibians?

Amphibians such as frogs and newts are more dependent on the aquatic habitat than reptiles. Their eggs are protected only by a thin membrane and are laid in water. Many of them go through several developmental stages, till they become adults Unlike amphibians, reptiles such as tortoises, crocodiles or snakes have a scaly skin. Their eggs are covered by a hard calcite shell and are laid on land.