Answer
(c)
Work Step by Step
Earth’s climate has naturally fluctuated, though current warming is accelerated by human activities, especially the burning of fossil fuels and deforestation.
The answer is (c).
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 19 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 699: 7
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