The diagram shows the consumption of renewable energy in the USA from 1949-2008. Write a 150-word report for a university lecturer identifying the main trends and making comparisons where relevant.

The graph describes the usage of environment-friendly energy in The United States from 1949 to 2008.

This

essay is going to identify the main trends and make comparisons when relevant. The unit

that is

used is in quadrillion BTU or British Thermal Unit.

Overall

, all categories have the same tendency, climbing from the beginning to the end of the diagram. It is indicated that there are two old-fashioned and two new types of energy sources.

First,

the most used source for generating electricity of all time is hydroelectric power, followed by wood, biofuels, and the

last

, wind kinetic power. Biofuels and air have been invented and utilized since 1980.

Besides

, biological combustible substances were more favourable than wind from the time they were innovated until 2008.

Moreover

, the utilization of water-powered generators was stagnantly increasing, except for a dip between 1987 and 1988, causing the consumption of wood to be higher than hydroelectricity.

In addition

, the total power consumption indicates that there

are

Wrong verb form

were

show examples

two big dips in 1977 and 2000, but, the trend was always increasing from 1950 to 2008.