The origin of pollutants come up naturally, such as the volcano explodes, causing particulates, sulphur dioxide. Forest fires cause smoke. Dust. Hydrocarbon Carbon dioxide also side at. .. It is generally caused by the plants, such as rotten gases have then (CH4) fine particles pollen, a natural radioactive particles that exist in various substances from the soil, it was blowing up, punch in the air convection, dust from the storm. Natural gas transactions, dio etc. are toxic air.
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