The given graph below shows UK air pollutants in millions of tonnes, from three different sources, between 1990 and 2005.The vertical axis represents for the number of air pollutants tonnes and the horizontal axis stands for years.
Overall,at the beginning,transport air pollutants result was almost 4 times higher than household air pollutants result,however,by the end of the period,household air pollutants result became as much as twice than transport air pollutants result.
From 1900 to 1999,the percentage of air pollutants,which came from household results,gradually fell,but stayed higher than transport air pollutants results.At this period,results which came from the industry had low results,but suddenly had constantly risen to high results of air pollutants and became the same as total air pollutants results.That’s shown how human factors impact to air pollutants.
After equal proportions, while a stable growth of air pollutants which came from the industry,air pollutants which came from the transport decreased steadily over the next year.