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

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

trees

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and ending with

an

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ethanol which is ready to be used as fuel.

Initially

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,

trees

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

trees

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

trees

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during harvesting time. The cropped

trees

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then

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

then

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being processed at the laboratory to be concentrated

to

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into

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a sugar.

Subsequently

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, microbes are added

into

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to

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the sugar and

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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

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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

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to be utilized as their source of energy,

along with

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the sunshine. The cycle,

therefore

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, commences again, as the

trees

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