The diagram below shows how a biofuel called ethanol is produced. Summarise the information by selecting and reporting the main features, and make comparisons where relevant

The diagram illustrates the way in which a biofuel called

ethanol

is created.

Overall

there are three main stages: harvesting plants and trees, creating cellulose, and adding microbes to sugars to produce

ethanol

. In the first stage, plants and trees which have absorbed sunlight and carbon dioxide, are cut down and harvested by tractor.

Following

this

, the fragments are sent to a pre-processing machine which creates strands of cellulose. Once the strands have been created, they are

then

processed with chemicals where they break down into sugars. In terms of making

ethanol

and CO2, as soon as the sugars from the processing stage have been formed, microbes are added in order to make

ethanol

on a large scale.

This

biofuel is

then

ready to be used in cars, trucks, and aeroplanes, which in turn emits carbon dioxide and

this

then

goes back into the atmosphere where the process repeats itself.