Did you know you cry two types of tears? And up to 30 trillion red blood cells pass through your heart in a minute? With colorful, infographic-style illustrations this informative book is packed with surprising facts and useful information on exactly 100 topics about the human body. A useful referen...

Did you know you cry two types of tears? And up to 30 trillion red blood cells pass through your heart in a minute? With colorful, infographic-style illustrations this informative book is packed with surprising facts and useful information on exactly 100 topics about the human body. A useful reference book for home, school and general knowledge quizzes.