The given diagram illustrates the process of producing a biofuel named ethanol. Overall, there are seven main steps in the ethanol manufacturing process, beginning with the phenomenon that plants and trees use biological supplements to grow and ending with vehicles that consume ethanol and then release carbon dioxide into the atmosphere.
At the first stage of the diagram, sunlight and carbon dioxide are absorbed by vegetation to develop what is called photosynthesis. Once they have been harvested, the collected products undergo a pre-processing process that cuts them into strands of cellulose.
In the next step, the cellulose strands are transferred to a laboratory for processing to manufacture sugars, which are then combined with microbes to convert them into ethanol. This ethanol is then used as a fuel to power transportation with combustion engines, such as planes, trucks, or private cars. These vehicles will burn up the ethanol and release carbon dioxide into the atmosphere. To reiterate this process, the emissions continue to circulate in the air, and the trees and plants, in turn, consume this as their food, and the cycle restarts.