If you need to know it, it’s in this book!Cracking the AP Environmental Science Exam, 2012 Edition, includes:
• Quick-study lists of important environmental science terms • A thorough review of all necessary laboratory exercises • A comprehensive guide for how to ace the free-response section of the exam • 2 full-length practice tests with detailed explanations • Updated strategies that reflect the AP test scoring change
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I read the whole book and took one of the practice exams, and even though I didn't take the actual class I'm almost positive I got a 5 on the test this year. I noticed while taking the test that there were a lot of small things mentioned in the book that were entire questions in the test. I knew the answer, of course. :) I highly recommend the Princeton series of books on env sci for anyone looking to take the test and get easy college credit.