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Linh13
35

Wildfires are _______. a. a human source of air pollution b. a natural source of air pollution c. both a natural and human source of air pollution d. none of the above

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Hannahdidrah

The answer is letter c.  It can be both natural and human source of pollution.  There are times when the intense heat can trigger a brush fire and can expand depending on how strong the wind blows.  It can be caused by humans.  it could due to carelessness of people leaving flammable materials unchecked. Or using too much fuel that when lit would cause a brush fire that would expand into a wildfires.  The smoke from it pollutes the air.

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