Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 56 - Test Your Understanding - Level 1 - Knowledge/Comprehension - Page 1284: 2

Answer

D

Work Step by Step

We know this to be the largest contributor to atmospheric CO$_2$. The other options would have the opposite effect, increasing oxygen levels.
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