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

The flow chart illustrates the way how biofuel called ethanol

manufactured

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is manufactured

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.

Overall

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, there are 9 stages in the whole

fuel producing

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fuel-producing

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process, beginning with energy produced from sunlight and

carbon

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dioxide

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and ending with releasing

carbon

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dioxide

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from different

kind

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kinds

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of

transports

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transport

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.

To begin

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with, the energy which consists

from

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of

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sunlight and

carbon

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dioxide

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consumed by

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is

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absorbed by plants and trees to grow

up

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apply

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.

Then

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, the grown crops are harvested by huge

tractor

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tractors

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.

After

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this

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, the harvested crops are passed through

pre-processing

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a pre-processing

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machine which

break

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breaks

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up

it

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apply

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into small pieces until the cellulose has been produced.

Next,

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processing

Verb problem

apply

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cellulose with chemical elements in

laboratory

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the laboratory

a laboratory

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are manufactured sugars which main

component

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components

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of producing ethanol.

Following

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this

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, microbes are added to the sugar, and

this

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mixture is turned into biofuel.

Finally

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, the ethanol consumed by planes, lorries and cars

which are producing

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produces

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carbon

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dioxide

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and

recycling

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recycles

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the process again.