Biology 2010 Student Edition

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

Chapter 20, Viruses and Prokaryotes - Assessment - Prokaryotes - Understand Key Concepts/Think Critically - Page 596: 15



Work Step by Step

Nitrogen fixation is the process by which bacteria convert nitrogen gas in the atmosphere into a form of nitrogen other organisms can use. For example, nitrogen-fixing bacteria form symbiotic relationships with the roots of some plants; these bacteria convert atmospheric nitrogen into nitrogen compounds such as nitrates for the plants to use.
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