A significant new feature of this edition is the integration of media asset into the chapter content. Virtually every section of the textbook is now linked to MP3 files, 3D and 2D animations of biological processes, and National Geographic and ScienCentral videos. In addition, McGraw-Hill offers a full suite of adaptive learning tools including LearnSmart, LearnSmart Labs, LearnSmart Prep, LearnSmart Achieve, and SmartBook, all designed to assess a student’s existing knowledge base and adapt to particularly address deficiencies.