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 given pie chart gives information on the proportion of 5 major sources which generate

electricity

in the US between 1980 and 1990.

Overall

,

it is clear that

the most

electricity

was generated from oil throughout the period. When it comes to the percentages of

electricity

produced from natural gas and coal showed reversed trends. Looking at the pie chart in detail, the

figure

for oil accounted for the largest size at 42% and 33% respectively from 1980 to 1990 despite its slight decrease. Natural gas generated 26% of

electricity

which is the second largest in 1980 but it declined from 26% to 25%.

Conversely

, the

figure

for coal showed an upward trend. It comprised 22% which is the third biggest slice in 1980, and it went up by 5% to 27% which exceeded the

figure

for natural gas in 1990. With regards to nuclear power, the

figure

for it rose from 5% to 10% from 1980 to 1990

while

its volume is negligible.

Also

, there is no change

about

Change preposition

in

show examples

the proportion of

electricity

came from hydroelectric power. It stayed at 5% throughout the period.