Environmental Science for AP* (2nd Edition)

Published by W. H. Freeman
ISBN 10: 1464108684
ISBN 13: 978-1-46410-868-6

Chapter 19 - Module 63 - The Evidence for Global Warming - AP Review Questions - Page 685: 4


I and II only

Work Step by Step

By examining thousands of sediment layer samples and the fossils of marine organisms, we can gain insights into temperature changes over millions of years. By measuring air trapped inside the air bubbles of ice, we can measure historical CO2 concentration.
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