Band 6+: You should spend about 20 minutes on this task. 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. Write at least 150 words.

The furnished flow chart describes the process of production of a biofuel denominated Ethanol. Overall, it is a circular stream from sunlight and Carbon Dioxide collected in the air to the elaboration of Ethanol used for fueling our forms of transport, before returning in the form of Carbon Dioxide in our atmosphere.

Ethanol has a natural origin derived from the Energy, a mix of sunlight and Carbon Dioxide, which permits that forests grow steadily by being absorbed by them. Then, after trimming these plants and trees, the process follows with some complex steps which lead to creation to Cellulose firstly, then transforming it into Sugars and lastly into Ethanol by adding Microbes. This biofuel goes into our cars, tracks, buses and also planes, which free it in our atmosphere as Carbon Dioxide by an elaborated mechanism.

Comparing the diverse steps of this process, it is evident that Ethanol for being produced needs several and complex moments, which implicate several processing steps, which range from a natural origin to an elaborated product to be used in our transporting mains. At least, it returns in its original form as Carbon Dioxide, restarting the process by the beginning.