Known for its thorough coverage of diversity, animal physiology, ecology, and environmental issues, this comprehensive book engages students in asking and answering questions during the course. Biology: Life on Earth helps instructors and students manage a wealth of scientific information in a manner that is both meaningful and long-lasting for students. The authors encourage students to learn according to their own style, and to relate this information to their own lives. In each chapter, the Eighth Edition of this trusted biology resource features significant content revisions as well as new figures and photographs.