Every volume of Science Comics offers a complete introduction to a particular topic--dinosaurs, the solar system, volcanoes, bats, robots, and more. These gorgeously illustrated graphic novels offer wildly entertaining views of their subjects. Whether you're a fourth grader doing a natural science unit at school or a thirty-year-old with a secret passion for airplanes, these books are for you!In this volume, visit the inside of your mouth, stomach, liver, intestines, and other organs that make up the gastrointestinal tract! Your guide to the gut is a friendly bacterium who will take you on a journey beyond imagination. Uncover how food is transformed into nutrients! Explore strange and dangerous glands! Behold the wonders of saliva, mucus, and vomit! This is a trip to the toilet you will never forget!