Biology Now with Physiology , Fourth Edition, offers students a dynamic learning progression in every chapter. Driven by captivating stories, this progression makes Biology Now with Physiology the most impactful learning experience for non-majors. New chapter-opening movie-style "First Look" videos in the Norton Illumine Ebook draw students into the chapter topic and motivate engaged, purposeful reading. "Check Your Understanding" questions at the end of most chapter sections then allow students to confirm and refine their comprehension. Finally, each chapter culminates with an "Evaluating Scientific Claims" interactive in which students apply newly learned concepts to real-world scenarios.