The diagram below shows how a biofuel called ethanol is produced.

The following picture illustrates the production process of a biofuel named

Ethanol

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.

This

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process is actually a cycle, consisting of seven main steps. Primarily, plants and trees use energies like sunlight and carbon dioxide to grow.

Next,

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these grown plants and trees are harvested mechanically and transported to the factory.

Then

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, they go under a special process called pre-processing which extracts cellulose from weeds by the use of a specific machine. In the next stage, cellulose is taken to a

labratory

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laboratory

, where cellulose is

broke

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broken

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down

to

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into

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smaller molecules called sugars. After adding microbes to the sugars,

ethanol

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is produced as the final product. The manufactured

Ethanol

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will be used by various vehicles,

such

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as cars, buses, trucks, and

also

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airplanes

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aeroplanes

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. Burning

ethanol

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in vehicles' engines leads to carbon dioxide emission, which will be used by plants and trees to do photosynthesis and ultimately, thrive, constantly repeating the cycle of

ethanol

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production.