Question

Which of the following is a primary pollutant in the lower atmosphere?

argon

lead

nitrogen dioxide

ozone

peroxyacyl nitrate

Answer 1

Question:

Which of the following is a primary pollutant in the lower atmosphere?

Answer:

Nitrogen dioxide

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Answer 2

Lead

Step-by-step explanation:

Argon is wrong because it is a noble gas and is a non pollutant part of our atmosphere. Additionally, Nitrogen Dioxide, Ozone, and Peroxyacyl Nitrate are all secondary, not primary, pollutants. By default, Lead is your answer.