Cengage Learning HISTORICAL GEOLOGY: EVOLUTION OF EARTH AND LIFE THROUGH TIME, THIRD EDITION, teaches students the basic principles of the physical and biological events of Earth's history, as well as how scientists apply these principles to unravel the history of Earth. Authors Wicander and Monroe present a balanced overview of both the geological and biological history of the Earth as a continuum of inter-related events. These events reflect the underlying principles and processes that have shaped our planet. The authors also explain the historical development of these basic principles and processes, and their importance in deciphering the history of Earth. Three major themes - time, evolutionary theory, and plate tectonics - are woven throughout the book. These themes help readers link what may seem like unrelated material and are essential for understanding historical geology. Included with every new copy of this edition are In-TERRA-Active™ 2.0 CD-ROM and InfoTrac College Edition. New features integrate these exciting products into the book for readers.