In this fun book filled with beautiful, detailed photographs and fun worm facts, readers will enter the secret underground world of the earthworm. Discover how worms feed on soil and rotting leaves. Learn all about worm poop and how it's a nutritious food for trees and other plants. See how a worm's body is perfectly designed for wriggling through soil. Learn how worms must keep safe from being eaten by hungry birds and toads. And discover how worms mate, lay eggs, and make more worms! This book is a perfect introduction to critter life cycles that's packed with core science vocabulary. The carefully leveled text and close-up images are a great way to get young readers enthused about nonfiction books and will get little nature fans seeing the humble earthworm in a whole new light.