Flowering plants, cone-bearing plants, ferns, and mosses make up the four main plant groups. But did you know that each of these groups has a different life cycle? Or that some plants reproduce with seeds and others reproduce with spores? This book investigates the life cycles of each of the four main plant groups. --Amazon.com.

Audisee® eBooks with Audio combine professional narration and text highlighting to engage reluctant readers! Water is essential to life on our planet. Water is constantly moving between Earth's surface, the air, and the ground. But did you know that water cannot be created or destroyed? Or that water is not only a liquid but also a solid and a gas? See the water cycle in action in this fascinating book.

Igneous rocks, sedimentary rocks, and metamorphic rocks make up the three main types of rocks and are constantly being created, destroyed, and created again? Colorful illustrations show how the rock cycle works.