Most kids love chocolate, but few of them know that its main ingredient, the cocoa bean, comes from a tree that grows in tropical rain forests. Dual-layer text describes the life cycle of the tree, emphasizing its botanical structures and highlighting the interdependence of the plant and animals such as the pollen-sucking midge, brain-eating coffin fly, and aphid-munching anole lizard. Two wise-cracking bookworms offer meta-textual commentary and...

Estivation is just like hibernation - only it happens in summer instead of winter. Why do some animals settle into cool, snug spots and sink into a summertime sleep? Because it's too hot for their bodies to function, or their food is in short supply. Some estivating animals sleep groups; others rest alone. Some go on a long journey before they slumber; others hunker down right at home. From the pixie frog to the spotted turtle to the desert hedgehog,...

Introduces robots and the science behind these amazing machines, including a historic timeline of robot development, common jobs robots perform in the workplace and at home, and robots of the future.

"Discover how different animals use their ears to hear the world around them, hide from predators, and know where they are"--Provided by publisher.

Describes how human behavior can affect butterflies, explains how people can take action to ensure their survival, and introduces eleven species.

"Young naturalists meet sixteen birds in this elegant introduction to the many uses of feathers."--

"Discover how different animals use their eyes to hunt, scare other animals, or stay safe"--Provided by publisher.

This book provides an overview of crystals including their structure and composition, history, significance, and uses throughout the world.

"Discover how different animals use their tails to keep their balance, swim, and more"--

"Discover how different animals use their noses to smell and breathe and more"--Provided by publisher.