It depends on the specific species, but on the whole, now they don't.
yes i think so
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
Reptiles have dry, rough skin that helps them stay hydrated. This is important because many reptiles live in arid and desert conditions.
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
Living reptiles usually have scales. They also lay eggs and these hatch to give offspring, quite unlike mammals who give birth to offspring.
Both ! They are air-breathing reptiles !
17 years
Yes, for the first two years.
yes their both reptiles, stay in the sea, and are slow.
They does it because they are cold blooded reptiles and need slight to stay warm