The bar chart provides information on the three different sources of carbon emissions (oil, coal, and gas) in the UK for the years 1990, 1995, 2000, 2005 and 2010. Overall, the figure for coal dominated in two former years, whereas that for gas led the list in the remaining periods. Additionally, coal and oil emissions reduced gradually throughout the period, while gas waste saw steady growth.
In 1990, coal emission showed as much as more than 300 million tons, further dropping to roughly 280 million tons in 1995, continuing to dominate. By the following half decade, however, the figure declined to 250 million tons, which placed it at the bottom of the list until the end of the timeframe. Furthermore, the value experienced trough at 200 in 2010, after recording 240 million tons in 2005.
Regarding upward trend, other contaminants – oil and gas – started the timeline at about 220 and 270, respectively. In 1995, gas continued its increase, with oil beginning its dropping period, yet remaining at the second position between 2000 and 2010, gas being the first. Both sources (gas and oil) registered following records for the period from 1995 to 2010: 270 and 240, 300 and 250, 310 and 230, 320 and 200, respectively.