Fill in the Blanks Air pollutionOnline version What do you know about air pollution? Double click on the given words in order to fill them in. by Lis Linka 1 eruptions pollutes Natural human fuels indoors emissions radioactivity outdoors chemicals pollutant Human natural pollution chemicals fossil fires Everithing that the air is called a . Air can result from both and actions . events that pollute the air include forest , volcanic and natural . activities that pollute air are burning of , from factories and plants , . Air can be polluted both and . Smoking , , dust are examples of indoor air pollution .