Reptiles have a more complex heart than amphibians. Here's a brief comparison:
Amphibians (like frogs and toads):
Reptiles (like snakes, lizards, and crocodiles):
No.
Yes! there's more venomous Amphibians than Reptiles.
Dinosaurs are more closely related to reptiles than to amphibians. In fact, dinosaurs are classified as reptiles. Amphibians are lower on the evolutionary tree than reptiles. Reptiles developed from amphibians. Amphibians developed from fish.
Crocodiles are a group of reptiles and they do not belong to the amphibians. Reptiles are a more recent groep of animals compared to the amphibians.
monkey fish=2 amphibians = 3 reptiles=3.5 birds and mammals=4
Reptiles
Neither...They were reptiles. dinosaurs were nether amphibians or mammals they were all reptiles, though they are more closely related to birds.
lay shelled eggs
because their limbs and bones are stronger than those of amphibians
I suppose they are part of the lizard family... to put it more specific I would say they are amphibious reptiles.
They are generally considered reptiles, though some think they should have their own class.
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.