Biological Science (6th Edition)

Published by Benjamin Cummings
ISBN 10: 0321976495
ISBN 13: 978-0-32197-649-9

Chapter 53 - Ecosystems and Global Ecology - Review - Page 1137: 3

Answer

C

Work Step by Step

Fossil fuels are the longest-living reservoirs of carbon. They are created from large organic biomasses that have been subject to heat and pressure within the earth's crust. They take millions of years to form and are comprised mainly of hydrocarbons.
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