yes
Reptiles breathe air - through their lungs.
No. All reptiles, both on land and in water, must breath air. Marine reptiles can hold their breath from a considerable time, but must surface to breathe once in a while.
Baby reptiles breathe air through their nostrils and their mouths into their lungs, just like adult reptiles.
Yes
Obviously oxygen from the air.
Reptiles and mammals are vertebrates. They both breathe air.
Fish obtain oxygen through their gills, allowing them to breathe underwater, while reptiles require air to breathe like we do. Marine reptiles, such as sea turtles, have to surface periodically for air.
Birds are similar to reptiles. Both are vertebrates which lay eggs and breathe air.
No, birds and other reptiles like crocodiles also breathe air. Insects absorb air through their skin.
Reptiles (snakes, lizards, crocodiles etc) breathe using lungs. If they are underwater they have to come to the surface to breathe. Amphibians (frogs, newts, salamanders etc) are NOT reptiles. Amphibians often breathe through their skin. They can also gulp air into their primitive lungs using their mouth or throat.
Most reptiles exchange gases through their lungs. The lungs of reptiles are folded so as to make enough room for gaseous exchange.
Yes, they, like all reptiles, breath air through lungs.