This best selling AP Environmental Science study guide includes:A new diagnostic test to pinpoint the test taker’s strengths and weak areasTwo full-length practice exams with all questions answered and explainedA detailed review of all test topics, with practice questions and answersAn overview of the test plus helpful test-taking strategiesHundreds of diagrams and illustrationsThe book comes with a CD-ROM that presents two additional full-length practice tests with answers and automatic scoring. BONUS ONLINE PRACTICE TEST: Students who purchase this book or package will also get FREE access to one additional full-length online AP Environmental Science test with all questions answered and explained. System Requirements:Microsoft® Windows®: 2.33GHz or faster x86-compatible processor, or Intel® Atom® 1.6GHz or faster processor for netbooksMicrosoft® Windows® Server 2008, Windows Vista® Home Premium, Business, Ultimate, or Enterprise (including 64 bit editions) with Service Pack 2, Windows 7, or Windows 8 Classic 512MB of RAM (1GB of RAM recommended)MAC OS: Intel Core® Duo 1.83GHz or faster processorMac OS X v10.6, v10.7, v10.8, or v10.9512MB of RAM (1GB of RAM recommended)