The picture illustrate the various state is the proces of producing a biofuel called ethanol.
Overall, there are 9 state is the making of ethanol gas. First step is growth plants and trees, and finishing step is ethanol gas is using in transportation.
At the first step, Sunlight energy and carbon dioxide helping for growth plants and trees. Next step is harvesting where they are mature enough. after being move on another machine collecting, and move on another machine where slice them in small piece to form cellulose. this step is called pre-processing.
In the following state cellulose taken to a factory where processing. after then in next step is sugar. In sugar there adding microbes then make ethanol gas, And last state is ethanol gas was using like fuel in transportation vehicle such as car, trucks, airplane. Finally, A huge amount of carbon dioxide are released into the air become energy for repeat same process.
