The line graph shows changes in acid rain emissions in the UK across four sectors between 1991 and 2007, measured in tonnes.
Overall, it is clear that all sectors demonstrated a downward trend over the period, while the smallest decrease can be observed in the domestic sector.
At the beginning of the period, the electricity sector stood at approximately 3.35 million tonnes. Emissions then declined steadily, reaching around 0.5 million tonnes by 2007. Meanwhile other industries began at with about 2.2 million tonnes, it then declined gradually to reach almost 1.25 million at the end of the period.
By contrast, transport and communication showed a different pattern starting at around 0.7 million tonnes, it increased slightly, peaking at 0.8 million in 2007. Meanwhile the domestic category followed a downward trend throughout the period.
