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.

The two pie charts compare five primary

sources

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of energy which were used in the US between the 1980s and the 1990s.

Overall

Linking Words

, oil and natural gas were the most prevailing

sources

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in the US over the 10-year period, but there were downward trends for them.

On the other hand

Linking Words

, coal and nuclear power witnessed increased tendencies.

To begin

Linking Words

with oil,

this

Linking Words

was one of the most common

sources

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of energy in the US resulting in

mading

Correct your spelling

making

up 42% in the first year. After a decade the source of oil fell significantly to 33%.

In addition

Linking Words

, by 1990 natural gas had ranked

the

Correct article usage

apply

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second

popularity

Change preposition

in popularity

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which dropped by 1%. Regarding the source of nuclear power was 10% in 1990, which was double that of 1980.

Furthermore

Linking Words

, there had been unchanged for the source of hydroelectric power of 5% for 10 years. The

sources

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of coal surpassed natural gas leading to the second position in the US in the final year, with 27% of it

using

Wrong verb form

used

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.