Respuesta :

Question:

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

Answer:

Nitrogen dioxide

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Answer:

Lead

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.