Evolution, Third Edition is a comprehensive treatment of contemporary evolutionary biology that is directed toward an undergraduate audience. It addresses major themes—including the history of evolution, evolutionary processes, adaptation, and evolution as an explanatory framework—at levels of biological organization ranging from genomes to ecological communities. Throughout, the text emphasizes the interplay between theory and empirical tests of hypotheses, thus acquainting students with the process of science. Teachers and students will find the list of important concepts and terms in each chapter a helpful guide, and will appreciate the dynamic figures and lively photographs. The content of all chapters has been updated.