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

sources

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

Overall

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

energy

source,

while

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

power

and nuclear

power

and nuclear hydroelectric

power

contributed the lowest

energy

source

at the end

of the period. The oil sector accounted for almost

a

Correct article usage

apply

show examples

half of the

energy

sources

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

Energy

sources

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

by

Change preposition

of

show examples

1% in 1990. Interestingly, the figure for hydroelectric

power

remained steady at exactly 5% in both years.

In contrast

, Nuclear

power

which comprised 5% of the total

energy

sources

in 1980, increased twofold in 1990. In 1980,

energy

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