What adaptation allows reptiles to live out of water?

What geological event caused many amphibians to go extinct and allowed reptiles to flourish?

How many loops do the circulatory systems of reptiles have?

Name of the structure that stores the urine and undigested food.

Lizards and snakes belong to this order.

This is the dorsal part of a turtle shell

What can birds do that reptiles cannot?

What is the name of the feathers birds use for flight?

The name of the early bird-like fossil from the late Jurassic Period.

Name of the muscular part of the stomach that often contains gravel.

How many chambers do bird hearts have?

True or False, birds have external reproductive organs?

Which could be the incubation period of a bird's egg?

Select the true statement(s).