Answer:
Traffic, power plants, fires
Explanation:
On average, traffic is the biggest source of air pollution.
such as cars, such as power plants, wood burning fireplaces.
This is easy, CO2 is (Carbon Dioxide) a main cause of air pollution. We put it in the air every day when we drive cars or vehicles. And from wildfires and volcanoes, but they rarely erupt now.
Nonrenewable resources are never replaced.
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