The given charts show the main sources of energy in the USA in 1980 and 1990. where relevant. Write a report for a university lecturer reporting the main features and making comparisons. Gia Linh

The pie charts illustrate the

proportion

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of different sources of

energy

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namely: oil,

nature

Replace the word

natural

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gas, coal, hydroelectric

Power

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and nuclear

power

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that the USA used between 1980 and 1990.

Overall

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, the

proportion

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for oil

energy

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remained the highest through 10 year period. It can be seen that there is not much difference in the

proportion

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of all categories from 1980 to 1990.

According to

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the diagrams, Oil,

the

Add a missing verb

was the

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most common

proportion

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of sources that the USA generated

energy

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in both decades, with 42% in 1980 and reduced by 10% to 33% in 1990. The second one in 1980 was Natural Gas,

accounted

Correct pronoun usage

which accounted

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for 26% and that stayed at the same

proportion

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in 1990, with 25%.

Moreover

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, the rate for Coal to generate

energy

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in 1980 was 22% and rose slowly  to 27% in 1990.

In addition

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, both Hydroelectric

power

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and Nuclear

power

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made the same

proportion

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at 5% in 1980,

however

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in 1990,the ratio of Nuclear

power

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doubled that of Hydroelectric

power

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, with 10% compared to 5%, respectively.