Answer
D
Work Step by Step
Underground tunnels and shafts aren't associated with surface extraction, because you don't dig deep enough while extracting the surface of an area.
Environmental Science for AP* (2nd Edition)
by Friedland, Andrew J.; Relyea, Rick
Published by
W. H. Freeman
ISBN 10:
1464108684
ISBN 13:
978-1-46410-868-6
Chapter 12 - AP Environmental Science Practice Exam - Section 1: Multiple Choice-Questions - Page 428: 4
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