The thought of bacteria may make people squirm, but this volume introduces readers to bacteria's many benefits. Readers learn what bacteria are and where they're found, as well as the different kinds that exist in the world around us. This guide to life science focuses on how bacteria help us, from the bacteria working as part of our digestive system to the bacteria that decompose organic material in soil. The impressive photographs effectively magnify these microorganisms to make the topic accessible to young readers.