For introductory biology courses for science majors. Focus. Practice. Engage. Built unit-by-unit, Campbell Biology in Focus achieves a balance between breadth and depth of concepts to move students away from memorization. Streamlined content prioritizes essential biology concepts and scientific skills that students need to build a solid foundation for future courses. The 4th Edition presents relevant, current content updates and engaging resources. New Visual Overviews present fundamental biological questions, and Study Tips share effective learning strategies. The new downloadable Active Reading Guide further supports students with self-assessment activities to complete as they read.