The graph compares the number of acid rain emissions from four major fields in UK between 1990 and 2007.
Generally, emissions in most sectors had a tendency to dwindle every year, which was manifested clearly by Electricity, Gas and Water Supply sector. There was a slight escalation in Transport and Communication sector.
Through the period shown, the highest acid rain emission approximately reached the milestone of 3.5 million tonnes in 1991 and was belonged to Electricity, Gas and Water Supply field. At the same time, Domestic field possessed the lowest emission amount with more than 0.5 million tonnes a lot. After 16 years, this sector still retained its leading poition of the lowest acud rain emission in UK with less than 0.25 million tonnes. Ranked after is Electricity, Gas and Water Supply sector, which had outstanding change. The number of emission in this field dropped to 0.5 million tonnes.
While other sectors became more eco-friendly, Transport and Communication field did not display any differences. The emission amount is likely the same every year. The peak of provoking environmental pollution is in 2005 with 1 million tonnes of emission. But it was lower 0.25 million tonnes than the lowest emissons in other industries, which arose at the same year.