Blastoff! readers. 3, Our planet Earth

Gather your gear and descend into Earth's underground openings! In this title, young readers are introduced to caves, including the different types of caves, how they form, what lives inside them, and how humans impact them. Readers will build reading skills through leveled text and interesting, labeled photos. Special features profile a famous example of the landform, show the parts of caves, highlight cave animals, and more. Discover the wonder of the dark world of caves!.

Many of Earth's deserts are hot. But did you know they can be cold and covered in ice? In this title, developing readers will discover what makes deserts unique. Text and photos introduce the types of deserts and the conditions that make them, the animals that live in deserts, and the impact of people on deserts. Features profile a well-known desert, show off animals, and summarize the impact of humans.