Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 4, Ecosystems and Communities - Assessment - 4.5 Aquatic Ecosystmes - Understand Key Concepts - Page 125: 27

Answer

b.

Work Step by Step

Option a. is incorrect. Parasites are organisms that live off of their hosts and harm them in the process. Option c. is incorrect. Plankton are organisms that are the basis of lake and pond food webs. Option d. is incorrect. Mangroves are special trees that grow in salty waters. Option b. is correct. Benthos are organisms that live at the bottom of oceans, streams, and lakes.
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