Biology: Concepts & Connections, Fifth Edition invites students into the world of biology with a new revision of this best-selling text. It is known for scientific accuracy and currency; a modular presentation that helps students to focus on the main concepts; and art that teaches better than any other book. The fifth edition builds upon this success with new features that help students synthesize and connect important topics such as Connecting the Concepts exercises and Key Concepts quizzes; and a variety of tools to help instructors enliven their lectures like our exclusive video clips from Discovery Channel.