The Streamline AP* Biology book is a review companion for student enrolled in an AP Biology course. It can be used both as a course textbook and as a supplemental review guide. The book takes on a narrative approach to thoroughly covering the new College Board AP Biology curriculum. It begins with the abiogenesis, or the origin of life (Big Idea I, Essential Knowledge D1 and D2), and continues on through all of the required essential knowledge contents. This content is not linearly aligned to the curriculum framework, but instead it follows a logical sequence focused on explaining how life emerged, how multicellular organisms derived their complexity through evolution by natural selection, and how biological system interact to create higher levels of organization and complexity. This book is thorough and hits on all parts of the AP Biology Big Ideas. In addition, the Investigation companion book (sold separately) provides a thorough description of each of the AP Biology investigations with sample data, analysis and conclusion based on the data, including descriptive statistics.