write a 150 word report for a university lecturer identifying the main trends and making comparisons where relevant.

The given line graph shows the major sources which are produced in the USA and the consumption of renewable

energy

in the USA from 1949 to 2008.

the

Suggestion

The

first

thing we can see that the use of renewable

energy increasing

Accept comma addition

energy, increasing

rapidly during the period. The total is approximately seven quadrillion BTU. The line graph is divided into four lines, respectively, showing the use of hydroelectricity

power

,

wood

,

wind

and biofuels.

Initially

, hydroelectric

power

and

wood

were used before 1950. The rate of

energy

consumed by hydroelectric

power

is higher than the rate of using

wood

. In 1950, both

energy

lines were at the same rate of

consumption but

Accept comma addition

consumption, but

the

wood

line decreasing afterwards.

However

, hydroelectric

power

and

wood

are two main

renewables

that can be renewed or extended

renewable

. Until 1980, biofuels and

wind

appeared as renewable

energy

and the usage of

energy

started to increase very slowly. In 2000, the consumption of biofuels was little higher than the

wind

energy

. To sum up, hydroelectric

power

was the most important renewable

energy

and

wind

power

was the least in the USA. Another thing is noticed that the using of renewable

keep

Suggestion

keeps

increasing per year. That contributes to environmental protection