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This gas is formed when nitrogen oxides react with a group of air pollutants known as reactive organic substances in the presence of sunlight. It's presence in the stratosphere is protective but can be toxic in the troposphere.

carbon dioxide


nitrogen


ozone


hydrogen

User Icats
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2 Answers

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The Answer would be C or Ozone
User Karancan
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Hey, Name's Jessy. I hope, I answer your question.

The answer is Nitrogen.
User Buzzrick
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