Environmental Science for AP* (2nd Edition)

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

Chapter 15 - AP Environmental Science Practice Exam - Section 1: Multiple-Choice Questions - Page 549: 7

Answer

(e)

Work Step by Step

Among the listed sources, fires (like wildfires) generally contribute the least amount of nitrogen oxide ($NO_x$) emissions compared with vehicles, fossil fuel combustion, industry, and power plants. The answer is (e).
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