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: 8

Answer

(a)

Work Step by Step

The accumulation of tropospheric (ground-level) ozone at night depends mainly on nitrogen dioxide ($NO_2$), which can photolyze in sunlight to produce ozone during the day and influence nighttime chemistry. The answer is (a).
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