collect the gases and percentage of gases causing pollution in rural and urban areas.a) convert the percentage of gases into ratio in urban and rural area b) take the average of each gas in rural and urban convert into decimal please tell me don't tell worst answers I will give 8ponts
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Answer:
EPA creates air quality trends using measurements from monitors located across the country. The table below show that air quality based on concentrations of the common pollutants has improved nationally since 1980.
Percent Change in Air Quality
1980 vs 2019 1990 vs 2019 2000 vs 2019 2010 vs 2019
Carbon Monoxide -85 -78 -65 -23
Lead -98 -98 -93 -85
Nitrogen Dioxide (annual) -65 -59 -51 -25
Nitrogen Dioxide (1-hour) -62 -51 -36 -17
Ozone (8-hour) -35 -25 -21 -10
PM10 (24-hour) --- -46 -46 -17
PM2.5 (annual) --- --- -43 -23
PM2.5 (24-hour) --- --- -44 -21
Sulfur Dioxide (1-hour) -92 -90 -82 -71
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Emissions Trends
EPA estimates nationwide emissions of ambient air pollutants and the pollutants they are formed from (their precursors). These estimates are based on actual monitored readings or engineering calculations of the amounts and types of pollutants emitted by vehicles, factories, and other sources. Emission estimates are based on many factors, including levels of industrial activity, technological developments, fuel consumption, vehicle miles traveled, and other activities that cause air pollution.
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