Approximately 40% of the nitrogen oxides come from transportation, about 25% from thermoelectric generating stations, and the balance from other(a) industrial, commercial, and residential combustion processes. These pollutants come from the use of coal in the yield of electricity, from smelting, and from the internal combustion engines in most cars. formerly released into the atmosphere, they are converted into such pollutants as ni...If you want to proceed a full essay, order it on our website: BestEssayCheap.com
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