The diagram below shows how a biofuel called ethanol is produced

The diagram illustrates the steps and equipment involved in the production of biofuels and the way in which

ethanol

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is used to make

fuel

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for vehicles.

Overall

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,

ethanol

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passes through four stages before being ready for use as

fuel

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.

While

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the process of making

ethanol

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uses a number of tools, the production of

ethanol

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is simple, the production of biofuels starts with pre-processing and processing. The first stage of making biofuels is called pre-processing, with sunlight and carbon dioxide making all the

plants

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and trees growing on the earth. These

plants

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and trees are harvested with motorcycle machines by farmers.

Next,

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the wood and

plants

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are crushed using a crusher machine. The resulting crushed wood have content is cellulose,

this

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content order to processing with another chemistry content in the lab into the sugars. After that, the product is added to the microbes resulting the

ethanol

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. The final product is ready to be used as

fuel

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for vehicles,

such

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as planes, trucks, and cars. All the

fuel

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used by the vehicle will result the carbon dioxide which continually rotates to produce trees and

plants

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.