The line graph compares the amount of acid rain emissions in the UK, measured in millions of tonnes, produced by four different sectors between 1990 and 2007.
Overall, emissions decreased in all sectors over the 17-year period. The electricity, gas and water supply sector recorded the highest emissions at the beginning but experienced the most dramatic decline. In contrast, domestic emissions remained the lowest throughout the period and showed a gradual decrease.
In 1990, electricity, gas and water supply emitted approximately 3.3 million tonnes of acid rain gases, and this figure fell sharply to about 1.3 million tonnes in 1997 before declining further to around 0.5 million tonnes in 2007. Similarly, other industries showed a downward trend, decreasing steadily from roughly 2.1 million tonnes in 1990 to about 1.2 million tonnes by the end of the period.
By comparison, transport and communication emissions fluctuated slightly over the years. Starting at around 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. Domestic emissions, on the other hand, declined gradually from about 0.6 million tonnes to nearly 0.2 million tonnes during the same timeframe.
Overall, while all sectors experienced reductions in acid rain emissions, the electricity, gas and water supply sector witnessed by far the most significant fall.