Given line graph illustrates the data about main causes of air pollution in the UK such as transport, industry, total air pollutants and household between 1990 and 2005. Units are measured in million tonnes. Overall, it can be seen that air pollutants emited from transport and household remained stable, whereas other two sources saw gradual decline over the given timeframe
There was sharp decrease in the amount of toxic gases emitted from industry and total air pollutants. Air pollutants caused from industry stood at approximately 7 at the beginning of period, which was the highest point. However there was dramatic decrease with following stabilization between 1999 and 2002. After remaining steady the amount of pollutants continued shard decline to finish at just over 3. Total air pollutants followed similar pattern. Having begun the period at just over 5, air pollutants stayed just below industry pollutants to finish at 2.
In contract, transport and household remained constant over the 15 years. Air pollutants caused by transport comprised at approximately 1, the lowest in that yeat. After fluctuating slightly, this proportion finished at 1 again. Household pollution started the period at exact point as transport. But, in comparison with transport, which finished in same level, household kept decreasing and stopped at the lowest point in the graph, just over 0
