Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?
What does it mean to migrate? Discover which animals migrate and why they migrate through detailed photographs and simple text.
Every month a cycle happens in the sky. Read about the patterns of the moon and how it changes throughout each month.
Winter, spring, summer, and fall—the seasons are one of nature's most familiar cycles. But why does the weather change? Learn why weather patterns change over the seasons.
From lakes, to clouds, to rain that falls back to Earth—discover how water changes through various processes to form the water cycle.
Beginning readers will learn about the basic patterns of the Sun and Earth and what causes day and night.
Examine the many awesome things about caterpillars, including their body parts and structure, their habitat and how it supports them, and the way they transform from soft-bodied...
Readers will learn about beautiful dragonflies, including information about their body parts and structure, their habitat and how it supports them, and what makes a dragonfly...
How does sheep's wool turn into cozy clothing? Follow each step in the production cycle—from shearing a sheep to pulling on a warm sweater—in this fascinating book!
How does cotton turn into a soft T-shirt? Follow each step in the production cycle—from growing cotton to wearing a comfy shirt—in this fascinating book!