Answer
B.
Work Step by Step
The other answer choices are all parts of the nitrogen cycle, just not the fixation step which is described in B.
Biology (11th Edition)
by Raven, Peter; Johnson, George; Mason, Kenneth; Losos, Jonathan; Singer, Susan
Published by
McGraw-Hill Education
ISBN 10:
1259188132
ISBN 13:
978-1-25918-813-8
Chapter 57 - Dynamics of Ecosystems - Review Questions - Understand - Page 1230: 3
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