Beginning with a history of the science of biology, this volume explains all of the basic theories and concepts for students, such as the classification of living organisms. It demonstrates the modern tools and techniques used by biologists, and presents the most noteworthy discoveries made by biologists that affect our daily lives. It also provides easy experiments that students can replicate for biology assignments or their own personal study. This volume is part of a four-volume series on the Basics of Hard Sciences. These volumes - Earth Science, Biology, Chemistry, and Physics - will teach school and college students everything they need to know to prepare research papers and classroom projects.