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 3 - Synthesis/Evaluation - Page 1284: 9


a) 1975: 330ppm. 2012: 395ppm b) 1.76ppm c) 550ppm d) See image e) Pollution from human activity, particularly fuel consumption. f) Additional data can always contribute, either by validating previous findings or noting their potential unreliability.

Work Step by Step

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