The diagram demonstrates the cycle of producing ethanol.
Overall, there are nine steps in the continuous cycle, starting with energy being absorbed by plants and trees, followed by cellulose being processed into sugars, ending with ethanol being produced and used by different types of transport.
The first four steps involve transformation of raw materials. Initially, plants and trees absorb energy, which includes sunlight and carbon dioxide. After this, grown vegetation is harvested by agriculture machine, and then put into a chipper machine for pre-processing. Next, cellulose is extracted, ready for the next stage.
The remaining steps produce a biofuel called ethanol. The collected Cellulose undergoes chemical processing, creating sugars. In the following step, microbes are mixed with sugars, producing the biofuel, ethanol, which are used by three different transport namely, cars, trucks, and airplanes. Next, these transport releases carbon dioxide into the environment, and then is absorbed the vegetation, renewing the process cycle.