The line graph illustrates the amount of acid rain emissions in the UK, measured in millions of tonnes, produced by four sectors between 1990 and 2007.
Overall, emissions decreased in all sectors over the period. The electricity, gas and water supply sector recorded the most dramatic decline, while domestic emissions showed the smallest reduction. By 2007, other industries became the largest contributor to acid rain emissions.
In 1990, electricity, gas and water supply was the dominant source, emitting approximately 3.3 million tonnes. However, this figure fell sharply to about 1.3 million tonnes in 1997 and continued to decline steadily to just 0.5 million tonnes by 2007. Similarly, emissions from other industries decreased gradually from around 2.1 million tonnes in 1990 to roughly 1.2 million tonnes at the end of the period.
Regarding the remaining sectors, transport and communication emissions fluctuated slightly throughout the period. Starting at about 0.7 million tonnes in 1990, the figure rose modestly in the mid-1990s and early 2000s before falling back to approximately 0.7 million tonnes in 2007. Meanwhile, domestic emissions experienced a slow but steady decline, dropping from about 0.6 million tonnes to around 0.2 million tonnes over the same timeframe.
In summary, while all sectors reduced their acid rain emissions, the electricity, gas and water supply sector saw by far the greatest decrease.