Ages 6-9. Discover the answers to more than 200 of the most jaw-dropping questions about the human body. This human body encyclopedia for kids is packed with captivating facts for curious minds! What are bones made of? Why does sugar taste sweet? Why do our ears pop? Page after page, kids will uncover incredible answers to all the questions they've ever had about their bodies, and some they haven't even thought of! 144 pages hc