Smog is caused by burning the forest to fire multiple times, both within the country and from the country. Neighbors. Burning leaves through the rest of agricultural materials to prepare the area for planting during the rainy season the burn area to benefit the store vegetables and sweet puffball community waste and fire, warmth. These combustion problems small dust and harmful gases such as sulfur dioxide, nitrogen dioxide, carbon monoxide, and. In the atmosphere and spread to an area of the community. Smog pollution in the North as a major air pollution problem, one of the country's problems. The terrain is swamp for the Pan and the climate in the winter with high air pressure. Weather and dry for a long time. Allow the accumulation of pollutants in the atmosphere exceeded these standards.
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