The perfect fact book for curious little ones who are looking for answers to some of the most interesting questions! Ever wondered when life first appeared on Earth? Or how we know what Earth''s insides look like? And why is it so cold on top of mountains? Discover the answers to all your questions about our weird and wonderful home in this must-have guide to all things planet Earth! With amazing photos to go alongside incredible facts! Collect the rest of the series!Ultimate Questions & Answers: Animals and NatureUltimate Questions & Answers: History and CultureUltimate Questions & Answers: Human BodyUltimate Questions & Answers: SpaceUltimate Questions & Answers: Science