2 years ago

High levels of in the atmosphere can cause photochemical smog, which can trigger respiratory problems.

Health

2 answers:

agasfer [191]2 years ago

7 0

The right answer is carbon dioxide

Grace [21]2 years ago

4 0

Photo chemical Smog is a form of air pollution. A main source of air pollution is Carbon Dioxide. Known as Co2, this air comes from cars, burning items, and factories.

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