The chart shows the total amount of nitrogen oxides (NOx) and sulfur dioxide (SO2) that coal-fired utilities emitted between 1999 and 2013. Based on the chart, do you think the steps taken by the EPA and the factories were effective in reducing air pollution from these two pollutants? Give your reasons.

Yes.

Explanation:

If the graph line comes lowers from 1999 to 2013 so it means that steps taken by the EPA and the factories were effective in reducing air pollution. The steps taken by the EPA and the factories were effective in reducing air pollution occurs from two pollutants i. e nitrogen oxides (NOx) and sulfur dioxide (SO2) if they install chimneys which collect these gases and reduce pollution. if the factories uses coal having less concentration of sulphur so less air pollution occurs.

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