Biology 2010 Student Edition

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

Chapter 3, The Biosphere - 3.4 - Cycles of Matter - 3.4 Assessment - Page 86: 5

Answer

Oxygen is a component of carbon dioxide in the atmosphere. During the process of photosynthesis, carbon dioxide is taken up and atmospheric oxygen is released. During cellular respiration, oxygen is combined with carbon and released in the form of carbon dioxide. Oxygen is also found in calcium carbonate, which is a part of animal skeletons and some rocks.

Work Step by Step

Oxygen is a component of carbon dioxide in the atmosphere. During the process of photosynthesis, carbon dioxide is taken up and atmospheric oxygen is released. During cellular respiration, oxygen is combined with carbon and released in the form of carbon dioxide. Oxygen is also found in calcium carbonate, which is a part of animal skeletons and some rocks.
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