The line graph presents the acid rain emissions in tonnes caused by various sectors over the past 17 years from 1990 to 2007 in the UK.
Overall, the problem experienced the downward trend over the years. The heavy acid rain caused by electricity, gas and water supply saw a dramatic fall by the ending year of the period, meanwhile, the causes, namely transport and communication, domestic, and other industries, witnessed slight fluctuations in their result of acidic rain during the time.
Regarding the cause of electricity, gas and water supply, with resulting the highest of around 3.3 million tonnes of acidic rain, these were the most problematic bearer of the challenge in 1990, which was almost the double amount of rain caused by the industrics and around three times more than the amount of rain emission by transport and communication, and domestics. However, it dropped significantly for the following seven years, emitting only 1.3 million tonnes in 1997 and remained stable until 1998. Then, witnessing a few swings and until 2003, the emission decreased to the lowest of 0.5 million tonnes by 2007.
With respect to the minor causes of acidic rain in the UK, industries caused 2.1 million tonnes of the rain, being at the position of second greatest bearer of problem followed by transport and communication, and domestics which made around 0.7 and 0.8 million tonnes, respectively in 1990. Unlike electricity, gas, and water supply, those all emitters hovered around their initial results until the end year of the period. While industries and domestics were experiencing the downward trend, in contrast, transport and communication saw a slight rise, reaching the peak at 1 million tonnes in 2005 before its constant decline to 0.7 million tonnes by the end of the period.