Reptiles lay their eggs on land and most spend a lot of their time out of the
water. While this is a fact today, it wasnt always this way. Living on land is
an adaptation reptiles underwent millions of years ago. Even more adaptations,
such as how reptiles regulate their body temperature and their scaly skin, are
more apparent to those studying crocodiles, turtles, and other reptiles in
modern times. Using a unique format of short facts, this book introduces readers
to the science concepts of evolution as well as the features that classify an
animal as a reptile.