Due to a near-surface temperature inversion, nitrogen oxides and particulate matter emitted from industrial zones in central Mexico are accumulating at low altitudes and failing to disperse, causing air quality in several surrounding cities to remain at hazardous levels. Prolonged exposure to polluted air can trigger bronchitis and allergic respiratory diseases, with the most significant impact on the elderly and children; pollutants in the atmosphere combine with subsequent precipitation to form acid rain, further damaging surrounding forests and soil.
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