The line graph illustrates the levels of air pollution in the UK from 1990 to 2005, originating from three different sources: industry, transport, and households. The quantities of pollutants are measured in million tonnes.
Overall, the total amount of air pollution in the UK decreased significantly over the 15-year period, with emissions from the industrial sector showing the most substantial decline. In contrast, emissions from transport remained relatively stable, while household emissions experienced a sharp reduction.
In 1990, the total air pollution was at its peak, at 7 million tonnes, primarily driven by the industrial sector, which accounted for around 5.5 million tonnes. This figure dropped significantly to approximately 2 million tonnes by 2005. As a result, total air pollution also decreased steadily, reaching just above 3 million tonnes by the end of the period.
Household emissions started at 1 million tonnes in 1990 and declined sharply to about 0.1 million tonnes by 2005. Meanwhile, emissions from transport fluctuated slightly, initially rising to 1 million tonnes by 1996, dipping slightly in 1999, and then stabilizing around 1 million tonnes through to 2005.