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How ozone can be both a pollutant and an environmental asset

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Ozone near the earth's surface is considered a pollutant, yet we need it in the stratosphere to protect us from uv radiation. Explain this seeming contradiction.

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https://brainmass.com/chemistry/compounds/how-ozone-can-be-both-a-pollutant-and-an-environmental-asset-93711

Solution Preview

High in the stratosphere, ozone (O3) is broken into O2 and O when struck by UV light. In the process it ...

Solution Summary

Ozone's function depends on its location within the atmosphere.

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