The given diagram illustrates the production of biofuel, known as ethanol.
Overall, it can be seen that it is the repetitive cycle.
The first thing that is noticeable is the energy that comes from sunlight and carbon dioxide, which makes plants and trees grow. Then, the grown trees and plants will be harvested. after that, it goes through pre-processing. The next step is getting cellulose from pre-processing. The gotten cellulose goes to factories to processing.
The factory makes sugar and then, microbes are added to the sugar. This step is the main thing, because after adding microbes, it becomes ethanol. Moreover, this ethanol is being sold to transportation such as cars, ferries and planes. In fact, those transports extract ethabol to air, which helps the cycle to repeat itself.
