Reptiles do need oxygen
Amphibians can absorb oxygen through their skin - reptiles need to physically breathe.
because they don't work as hard as humans do
Most reptiles use diffusion through the skin to obtained oxygen.
Reptiles don't get oxygen from the water. All reptiles have to come up to the surface to breathe, but can hold their breath a long time.
Lizards are reptiles and all reptiles breathe using lungs.
No, its just some reptiles that obtain oxygen through their skin. Many of them breath through their lungs.
Mammals maintain a higher body temperature. In order to do so, they require more energy and that requires more oxygen.
Yes, mammals have a 4chambered heart, while reptiles only have a 3chambered heart.
Obviously oxygen from the air.
Frogs, like all other reptiles, get their oxygen through their lungs
No. Reptiles commonly reporduce on land.
Reptiles are cold-blooded vertebrates that have scales or scutes covering their bodies. They lay eggs on land and breathe air through lungs. Reptiles are ectothermic, meaning they rely on external sources of heat to regulate their body temperature.