Extended ebook content for Cracking the AP Environmental Science Exam, 2016 Edition

Excerpted from Cracking the AP Environmental Science Exam, 2016 Edition by Angela Morrow, PhD, Tim Ligget, and the Staff of the Princeton Review. Copyright © 2015 by TPR Education IP Holdings, LLC. All rights reserved. Excerpted by permission of Penguin Random House LLC, New York, and in Canada by Random House of Canada, a division of Penguin Random House Ltd., Toronto. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.