It depends on the specific species, but on the whole, now they don't.
Marsupials, because Reptiles have never been mammals and have always had their offspring in eggs outside of them.
fish have scales and fish and reptiles can both stay under water
Cold Blooded, Offspring come from eggs, scales, and in some species webbed feet
Most reptiles lay eggs, and only a few give live birth to their offspring.
age of 21
Both ! They are air-breathing reptiles !
Living reptiles usually have scales. They also lay eggs and these hatch to give offspring, quite unlike mammals who give birth to offspring.
17 years
Yes, for the first two years.
They does it because they are cold blooded reptiles and need slight to stay warm
It was an advantage because reptiles no longer had to stay near bodies of water and could live in more environments than amphibians.
the animals are cold blooded so they get alot of sunlight to stay warm