The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer describing the changes which occurred.

Given are two figures concerning the major sources of energy in the USA in the 1980s and a decade afterwards. A glance at the pie charts provided reveals that oil was the most major part of the sources of energy

whereas

the negligible part

was belonged

Change to the active voice

belonged

has belonged

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to hydroelectric power in the all surveyed years. The highest amount of the sources was taken up by oil

accounted

Wrong verb form

accounting

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for 42

percent

Change the spelling

per cent

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and 33

percent

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per cent

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of the whole pie chart in 1980 and 1990 respectively. The second highest rate of energy generation in America was related to natural gas

accounted

Wrong verb form

accounting

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for all but 51

percent

collectively in

1980s

Change the article

the 1980s

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and a decade afterwards. 1980, nuclear power and hydroelectric power took up

similar

Add an article

a similar

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proportion of 5

percent

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per cent

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of the whole pie chart and they were the least significant proportion. The prior witnessed an exponential increment and stood at 10% in 1990. Meanwhile, the latter remained still in 1990.