Natural origin, such as forest fires, and from the combustion process.Regarding (b) ongsueng electricity for loop here comes from the Tana ทอี่ u both consummate onpha live by going to ทวั่ (to use the fireplace stove and , support , nahin nape and two nachuea my fire) From industrial plants [burning waste or garbage, scrap, furnace and production , nakho . (coke production)] from cigarette smoke and vehicle exhaust. PAHs Are Widely Air onnai To Comingle. Nganam lae Feeding the soil and soil sediments.
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