Biology 2010 Student Edition

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

Chapter 19, History of Life - Assessment - 19.3 Earth's Early History - Understand Key Concepts - Page 567: 28

Answer

Oxygen increase in the earth's atmosphere led to a number of evolutionary changes. Some forms of life go extinct, some forms adapt to breathing oxygen and some forms went under anaerobic conditions.

Work Step by Step

Oxygen increase in the earth's atmosphere led to a number of evolutionary changes. Some forms of life go extinct, some forms adapt to breathing oxygen and some forms went under anaerobic conditions.
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