Band 6+: You should spend about 20 minutes on this task. The graph below shows the production levels of the main kinds of fuel in the UK between 1981 and 2000. Summarize the formation by selecting and reporting the main features and make comparisons where relevant. You should write at least 150 words.

The graph illustrates the production levels of petroleum, coal, natural gas in the UK from 1981 to 2000.

Overall, at the glance from the production output of coal, we can see that it decreased over year whereas the production levels of petroleum and natural gas increased after many years. Moreover, the production output of petroelum can be compared to be double or triple of any other main fuels in the UK.

Among the three fuels, coal accounted for the lowest production level, at first it was higher than the natural gas nearly 40 energy units; then it decreased to about 38 energy units in the middle year between 1981 and 1986, then it increased to approximately 60 energy units in 1986. Over the period, it continued to fall down to about 32 energy units and had the tendency to decrease more. Meanwhile, the energy units produced by petroleum started above 90 energy units in 1981, it then fell down to 100 energy units in around the year 1991 and rose to the highest number which is 142 energy units during the period in 1999 before slightly decreasing to 140 energy units in 2000. In addition, the energy units produced by natural gas kept rising from about 39 energy units in 1981 to approximately 100 units in 2000.

Furthermore, over the time period, it can be seen that the production level of petroleum was always higher than the other main fuels. In 1981, it was approximately double higher to the energy units produced by natural gas. Until 1984, the abundance of energy units produced by coal was triple lower than the production level of the petroleum. At the end of the period, the total production levels of natural gas and the coal was equal with the enery units produced by petroleum.