Author Question: The origin of the gases called oxides of nitrogen in the atmosphere begins ____. a. in the ... (Read 207 times)

aabwk4 · **on:** Jul 13, 2018

The origin of the gases called oxides of nitrogen in the atmosphere begins ____.
a. in the stratosphere
b. in the troposphere
c. in the mesosphere
d. with precipitation
e. with ice

Question 2

Ozone, PAN, and small amounts of other oxidating pollutants are the ingredients of photochemical smog and grouped under a single heading called ____.
a. NOx compounds
b. volatile organic compounds
c. hydrocarbons
d. radicals
e. photochemical oxidants