The provided diagram describes the production process for ethanol, a biofuel used to power engines in vehicles and some other machines. There are six stages: cultivation of plants and trees, harvesting, pre-processing, processing, Microbes addition, at this stage, ethanol is produced, and combustion of ethanol.
It starts by burying seeds in the ground, then soil, water, fertilisers, sunlight, and carbon dioxide help them to grow into trees and plants. In the second stage, the grown trees and plants are harvested and transported to a factory. Next, in the factory, they are broken down and transformed into Cellulose, which is a complex sugar. After that, through chemical reactions, Cellulose is separated into simple sugars. Later, in the fifth stage, microbes are added to the sugars, where, by their activities, ethanol is produced. This is what we were after throughout the process. It is used to power machines such as cars and airplanes. When used, carbon dioxide is released as a by-product, which returns into the cycle when it is consumed by plants and trees.
In summary, ethanol is a biofuel used to run machines such as cars, trucks, and airplanes. It is produced from plants and trees via several chemical and non-chemical steps, and at the time of consumption, a by-product, carbon dioxide, is produced, which is consumed back by plants and trees