The diagram below shows how a biofuel called ethanol is produced. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram describes the process

in

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of

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producing a biofuel called ethanol. It is obvious that there are 8 main stages in the process, beginning with energy transmitted to plants and trees and ending with using methanol for transportation. The first step of the diagram is that plants and trees absorb energy from sunlight and carbon dioxide to grow. After they are mature, they are harvested by a machine.

Next,

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the plants experience a re-processing period so as to become cellulose.

Then

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, the cellulose is processed chemically in a lab.

As a result

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, sugar is made. In the final step, microbes are added to the sugar to produce ethanol. The ethanol is

then

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used by cars, trucks, and

airplanes

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aeroplanes

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. These models of transport themselves create carbon dioxide and contribute to cyclical production systems.