Earth's crust is broken into giant pieces called tectonic plates that move very slowly.

Some frogs can freeze solid in winter and thaw out alive in spring.

Pumpkins are a kind of fruit, because they grow from a flower and hold seeds.

An octopus has three hearts and blue blood.

Hummingbirds are the only birds that can fly backwards.

A newborn kangaroo is about the size of a jelly bean.

Frogs drink water through their skin.