Task 1 : The pie charts below describe the electric energy production a major source of energy in the US. Write a short report for a university lecturer describing the information in the charts

The pie charts give information about the percentages of various

energy

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sources

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which produce electricity in the US in the years 1980 and 1990.

Overall

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, it can be clearly seen that in both years Oil was the most significant

energy

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source,

while

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at the beginning of the period, the lowest contribution was made by hydroelectric

power

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and nuclear

power

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and nuclear hydroelectric

power

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contributed the lowest

energy

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source

at the end

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of the period. The oil sector accounted for almost

a

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apply

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half of the

energy

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sources

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in 1980 and experienced a considerable decrease to 33% in 1990.

Energy

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sources

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from Gas made up 26% in 1980 and had a slight fall

by

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of

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1% in 1990. Interestingly, the figure for hydroelectric

power

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remained steady at exactly 5% in both years.

In contrast

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, Nuclear

power

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which comprised 5% of the total

energy

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sources

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in 1980, increased twofold in 1990. In 1980,

energy

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output from coal was 22% and rose by 1% in the following period.