How big is the Sahara Desert? What is the name of a large seaweed that forms huge underwater forests in the ocean? Read this book to find out! Part of World Book's Learning Ladders series, this book introduces children to deserts, forests, grasslands, wetlands, polar regions, coral reefs, and other places where plants and animals live. Each spread includes introductory text, colorful illustrations with detailed captions, and photographs that show real-world examples of the featured topic. Puzzle pages, fun facts, and true/false quizzes appear at the end of each volume.