The depicted pictures provide data about the production of biofuel, specifically the process of manufacturing ethanol.
Overall, it is clear from the given data, the diagram consists of 3 main stages, including both man-made and natural actions.
To begin with, plants and trees are grown by absorbing sunlight and CO2, then they are logged and transported to the processing center. The next step is called “pre-processing” which creates cellulose from the plants and after that, the processing starts.
When it comes to the other remaining phases, sugars are taken from the processed product and microbes are supplemented to the ready ethanol. Finally, the biofuel is used for vehicles, including cars and aircrafts which release carbon dioxide to the air and the process begins anew with providing the vegetation with the emitted carbon dioxide.
To conclude, the production of biofuel is a time-consuming process that is used some equipment and special stages.