The provided diagram depicts a cyclic flowchart outlining the seven sequential steps involved in the production of ethanol from biofuel. Overall, it is seen how ethanol is made from biofuel, starting with the growth of plants and trees through the utilization of sunlight and carbon dioxide.
Initially, the diagram shows the primary stage where trees and plants utilize solar energy and carbon dioxide for growth. Subsequently, the plants are harvested and undergo pre-processing, leading to the production of cellulose. This cellulose is further processed into sugars through chemical treatments. Following this, the sugars undergo fermentation by microbes, converting them into ethanol.
Finally, the ethanol produced is transported for various applications, subsequently releasing more carbon dioxide into the environment. The cyclic nature of this process is evident as the ethanol generated can be utilized as a biofuel for vehicles, thereby completing the cycle by producing carbon dioxide, which can be utilized again in the growth of plants and trees.