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

The diagram shows the production of a certain type of biofuel named ethanol.

Overall

, it can be inferred that the process consists of eight different stages, starting from planting

trees

and ending with

an

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ethanol which is ready to be used as fuel.

Initially

,

trees

, as the main ingredient of biofuels, are planted to grow until it is mature. Sunshine and carbon dioxide are used by the

trees

as their main source of energy in order to grow. Once it is mature, farmers crop the

trees

during harvesting time. The cropped

trees

then

begin their pre-processing stage at the mill, where it is grounded in order to extract their cellulose. The cellulose

then

being processed at the laboratory to be concentrated

to

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a sugar.

Subsequently

, microbes are added

into

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the sugar and

finally

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finally,

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it becomes

an

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ethanol, which is ready to be used as biofuels for vehicles,

such

as cars, lorries, and

airplanes

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aeroplanes

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. Those vehicles produce carbon dioxide which contaminates the air. The carbon dioxide is beneficial for

trees

to be utilized as their source of energy,

along with

the sunshine. The cycle,

therefore

, commences again, as the

trees

are going to be used as the raw materials of ethanols.