From the start, Biology: How Life Works was envisioned not as a reference book for all of biology, but as a resource focused on foundational concepts, terms, and experiments. In the second edition, fundamental topics are still explained carefully, with an appropriate amount of supporting detail. This allows students to easily identify, understand, and apply critical concepts. In this way, students will leave an introductory biology class with a framework on which to build.   Biology: How Life Works is the only book for the introductory course to develop three pillars of learning—the text, media, and assessment—at the same time to ensure alignment and integration of concepts. By continuing this tradition in the second edition, instructors can be sure that new pieces of content— whether new examples, new figures, new assessment questions, or a whole new chapter—are never disconnected add-ons or extras.