Please Review My Task 1

My report:

The line graph shows the amount of six types of energy consumed by people in the USA over a period from 1980 to 2008 and a predicted period from 2008 to 2030.

From the graph, in 1980 the consumption of petrol and oil was the highest with 35 quadrillion units. After fluctuating for about 30 years, it rose gradually from the middle of the 1990s to 2008 and is likely to continue to increase until 2030, reaching nearly 50 at the end of that decade.

During the same period, the amount of natural gas has been fluctuating. The fluctuation is predicted to continue before the consumption levels off in the 2010s. As far as coal is concerned, its expenditure generally has been going up gradually and is not supposed to stop before 2030.

In term of renewable and nuclear energy, whereas the use of nuclear power and solar/wind power increases slightly in the considered period, that of hydropower went up and down and is likely to remain static at approximately 2 quadrillion units in the last 4 decades.

Overall, although the expenditure of energy produced from all sources increases over time, there has still been a long time before the consumption of sustainable and nuclear energy reaches the same level of that of fossil fuel.