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

The diagram illustrates the

process

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by which

ethanol

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, a biofuel, is produced.

Overall

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,

it is clear that

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the

process

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contains agricultural practices, processing in a manufactural facility, and consumption. To commence the

process

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, plants and trees are cultivated by natural energy (sunlight and carbon dioxide).

Subsequently

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, harvesting procedures take place, prior to taking the flora to a manufactural facility where pre-processing happens. In the pre-processing stage, plants are put into a crashing machine, cutting them into tiny pieces before obtaining cellulose from them. For the next step, cellulose is processed into sugars.

Next,

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microbes are added to the produced sugar, resulting in a biofuel, namely

ethanol

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.

Lastly

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,

ethanol

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is used in different means of transportation to run private vehicles, lurries, and aircraft. Notably, the carbon dioxide generated from these will return to the atmosphere.

This

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return provides the essential energy needed for plants' growth, an essential stage in

ethanol

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production, and the

process

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begins all over again.