The First Edition pioneered the focus on core concepts and competencies that is revolutionising biology textbooks. The Second Edition combines new features with trusted features from the First Edition to make the book even stronger. This text cuts through the excessive detail and factual minutiae to focus on what matters most in biology today.Well esteemed authors within the biology field, David Hillis and David Sadava, worked on remaking a text that would fit the modern biology classroom., Main features include chapter opening stories that set up an interesting question in a recognisable real-world setting for your students. The investigation figures describe a key experiment and hypothesis that students have to analyse and work with given data to come to conclusions. Principles of Life is available with LaunchPad., LaunchPad combines an interactive ebook with high-quality multimedia content and ready-made assessment options, including LearningCurve adaptive quizzing. See `Instructor Resources' and `Student Resources' for further information.