The flowchart provides key information about the stages involves production of biofuel materials to ethanol. Overall, it is clear from the chart that biofuel production journey is a multi-stages, closed lpop procedure, starting with energey produced by sunlight and ending with ethanol production.
In addition, the intial steps focus on growing plants and harvesting the plants, whereas latter stages involve production of ethanol materials. According to what is shown, the first steps include plants are grew by sunlight and carbon dixoide energry, harvesting the plants and the trees by farmers then transporting them to factory and cutting into small fragments by pre processing machinery.
These fragments tranformting into cellulose substances. In terms of material transformation, the cellulose substances processed into sugars. After that micobes are added into ethanol.
After ethanol producted be used into biofuel items, such as the cars, trunks and airplanes. These items are released to carbon dixoide substances.