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nFind out everything you've ever wanted to know about the rocks and minerals under our feet and deep in the Earth's crust. Budding geologists will love reading about how rocks form, the names of the coolest rocks and minerals, and rare and beautiful gemstones. Packed with weird-but-true facts and tons of cool info, this Level 3 reader explores the incredible world of geology. nNational Geographic Fact Readers feature the same expert-vetted running text as traditional readers-with a bonus 100 fun facts sprinkled throughout A fact roundup at the end of each book lets kids review what they've learned. (Plus, they can impress their friends with their rocks and minerals expertise ) nGet ready to be dazzled by some of the shiniest, most colorful, useful--and even dangerous--rocks, minerals, and gems on the planet! In this Level 3 reader, discover fascinating facts about the incredible rocks and minerals under our feet and deep in Earth's crust. Budding geologists will love reading about how rocks form, learning the names and features of the coolest rocks and minerals, and exploring rare and beautiful gemstones. Key features include: nExpert-vetted text appropriate for ages 7 to 9Brilliant and eye-catching National Geographic images100 fun facts sprinkled throughout the book* A fact roundup at the end of each book for kids to review what they've learned nPacked with weird-but-true facts and tons of cool info, this Level 3 reader explores the incredible world of geology. About the se