The diagram below shows how a biofuel called ethanol is produced

The provided diagram illustrates the production of a biofuel namely ethanol In general,

that is

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a chemical

process

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including 7 main stages, beginning with trees obtaining energy from sunlight and carbon dioxide and ending with public transport releasing the carbon dioxide into the atmosphere. Having looked at the given

process

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for more details, first of all, planted plants are qualified to be harvested by a harvester.

Secondly

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, these plants undergo pre-processing in factories where they are crushed in a grinding machine and converted into cellulose.

Next,

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the processed cellulose will experience a chemical

process

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and transform into sugars.

Thirdly

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, the

process

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continues with the sugars combined with added microbes and producing ethanol.

Next,

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this

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ethanol is used for operating public vehicles. After that, these vehicles emit carbon dioxide into the atmosphere.

Finally

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,

this

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gas is synthesized with sunlight with the purpose of providing energy to the plants and

this

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cycle continues again.