Question

Describe four ways in which natural processes add harmful particles to the air.

Answer 1

Volcanic eruptions, forest fires, fossil fuels such as coal and gasoline, mining operations

Answer 2

Answer: The wind blows particles of molds and plant pollen; forest fires, soil erosion, and dust storms add particles of smoke and dust; erupting volcanoes spew out clouds of dust, ash, and poisonous gases.