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

The diagram illustrates the

production

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of biofuel called

ethanol

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.

Overall

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, there are four steps in

this

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process

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.

Production

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of

ethanol

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cyclical

process

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begins with harvesting

plants

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and culminates in the completed product is

ethanol

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.

This

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ethanol

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is used by the

plants

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and trees for growing. The

process

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begins with harvesting

plants

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and trees that have grown thanks to sunlight and

carbon

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dioxide

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. The second

step

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involves pre-processing.

As a result

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of the second

step

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, cellulose occurs and it is taken for the processing

step

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. Microbes are added inside of the sugars that occurred

due to

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the processing

step

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and

ethanol

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is created. So

production

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of the

ethanol

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process

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is completed. After the

production

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of the

ethanol

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process

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,

ethanol

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is used by vehicles.

Subsequently

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,

carbon

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dioxide

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is released when vehicles use

ethanol

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.

carbon

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dioxide

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emitted into the atmosphere.

This

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means that

plants

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and trees can grow using

carbon

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dioxide

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and of course sunlight.