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

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

Overall

, oil and natural gas were the most prevailing

sources

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

On the other hand

, coal and nuclear power witnessed increased tendencies.

To begin

with oil,

this

was one of the most common

sources

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

, 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

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

sources

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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.