The bar graph compares the three different types of emission sources – oil, coal, and gas – of greenhouse gas in the UK from 1990 to 2010. Overall, while the production of carbon emissions caused by gas increased, the reverse was true for the remaining sources. Additionally, gas became the biggest producer of CO2 at the end of the period.
Focusing on the coal and gas first, they both exhibited similar figures. In 1990 the largest amount of carbon emissions was produced by coal at 300 million tons and this was followed by a steady decline to around 180 million tons in 2010. Similarly, the figure for oil started at little higher than 250 tons but then it dipped slightly to 230 million tons, before increasing to 250 million tons of carbon emissions. After which, the figure dropped again to 200 million tons at the end of the period.
Gas, on the other hand, bucked the trend. It caused 220 million tons of carbon at the beginning. In the following 20 years, the figure witnessed a gradual, yet steady growth, reaching staggering 350 million tons of carbon emissions.