The image shows information about manufacturing ethanol.
Overall, it can be clearly seen that this is a cyclical man-made process which consists of 10 stages. Plants, trees and microbes are used as raw materials in order to be transformed to ethanol.
Firstly, sunlight and carbon dioxide contribute to the growth of plants and trees. In the second stage, they are harvested by tractor. At the initial stage of the process, harvests are used by a pre-processing machine which results in cellulose. After that, cellulose goes through a chemical process in order to obtain sugar. The next stage consists of union sugar and different microbes which lead to ethanol. These biofuel productions are used in various types of transport, such as cars, plains, trucks and ships. All of them have emissions while working, which impact the environment. This pollution is called carbon dioxide which can used as the main element of biofuel production.