Fire Mountain: the eruption of hot lava and smoke dust rich in sulphur, methane and other gases. The air contains dust radicular go very far because it was spewing up very high.Forest fires: forest and grassland fires by natural processes occur due to lightning, the friction between the dry vegetation such as grass, bamboo. The fires often spread wide, more dust and gas emissions.Dust storm caused by strong wind and rain storms, soil erosion, soil and desert wind blew up into dust. The sea water evaporates and with ocean waves tossing salt dust carried foam spread into the air.The decomposition, rotten corpse, natural plants also emit many gases, chemical reactions between the natural gas formation of sulfide gas, nitrite salts, etc. The type of dust, gases are causing air pollution.b. artificial Sources:
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