The diagram represents the production of ethanol, which has three important stages, including the pre-production, production, and post-production stages.
First,
in the pre-production stage, the energy, which is gained from sunlight and carbon dioxide, is absorbed by the trees. Linking Words
Then
, they will grow and will be ready to be harvested by using a tractor. After that, the harvested trees will enter the pre-processing machine to be shredded and formed into cellulose.
In the production stage, cellulose will go through a chemical process that will convert them into sugars. Linking Words
Next,
microbes are added and ethanol is produced. Linking Words
Lastly
, in the post-production stage, ethanol will be used for running cars, trucks, and planes. These vehicles Linking Words
then
will produce carbon dioxide and will repeat the cycle from the beginning.
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To sum up
, in order to produce biofuel, there are several complex steps, that are labour and capital intensives. Linking Words
Moreover
, it requires chemical processing as well.Linking Words
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