Band 5+: The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The given pie chart clearly compare the main sources of energy in the USA in terms of five important categories in between 1980 and 1990.

As show in the graph that USA people utlized the largest proportion of thier expenditure on three resources, likely oil, natural gas and coal in 1980. Moreover, a tiny fraction spend on hydroelectric power and nuclear power in 1990.

Firstly, it is noticeable that the greatest propotion of fuel was used on oil, which represented 42% of the anual budget in 1980 but it exprienced a slight decrement by 33% in 1990. Similarly, natural gas figured a steady decline starting at 26% to 25% in between 1980 and 1990. However, in 1980 coal contained 22% of resouces witnessed nominal growth in the last year at 1990.

In addition, hydroelectric power remained at the bottom of the list that observed constant rate throughout the year by 5%during 1980 and 1990. Then, nuclear power covered a marginal inclined over the five year period in between 1980 and 1990 from 5% to 10%.