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 production process of a biofuel,

ethanol

.

Overall

, it mainly undergoes seven processes: growing of the

plants

, harvesting of the matured

plants

, pre-processing of the harvested

plants

, appearance of the cellulose, processing of the cellulose, appearance of the sugars and addition of microbes to produce

ethanol

. To start with,

plants

and trees absorb energy

such

as sunlight and carbon dioxide to do photosynthesis. After the

plants

grow, they will be harvested and pre-processed to be used. The cellulose of the

plants

then

pass

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passes

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through another processing stage. During the process, sugars are taken out. Meanwhile, microbes are added to the sugars. By combining

such

materials,

ethanol

is eventually made. The created

ethanol

, being a kind of biofuel, can be used in different aspects,

for example

in transportation. It is used to generate energy for cars, buses, planes, etc. The use of these transports

then

emits carbon dioxide. Eventually, the carbon dioxide is absorbed by the trees again and runs through the aforementioned seven stages to make

ethanol

.