Book excerpt: Get ready to ace your AP Environmental Science Exam with this easy-to-follow study guide5 Steps to a 5: AP Environmental Science introduces an easy to follow, effective 5-step study plan to help you build the skills, knowledge, and test-taking confidence you need to achieve a high score on the exam. This essential guide reflects the latest course syllabus and includes 3 full-length practice exams, an index of key ideas and concepts, plus the most up-to-date scoring information. A bonus interactive AP Planner app delivers a customizable study schedule and extra exam practice.5 Steps to a 5: AP Environmental Science 2019 features: •New: 3 Practice Exams•New: An index of the key ideas and concepts at the end of the book•5 Steps to a 5 program•An interactive, customizable AP Planner app with extra practice tests