The diagram below shows how a biofuel called ethanol is produced. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram illustrates the process of manufacturing

ethanol

, a type of biofuel, from

plants

.

Overall

, the production of

ethanol

involves ten distinct stages, starting with the absorption of sunlight and carbon dioxide by

plants

and concluding with the use of

ethanol

as a fuel in various transportation vehicles. The process includes both biological and chemical transformations.

Initially

, trees and

plants

absorb sunlight and carbon dioxide to carry out photosynthesis, producing essential energy. Once harvested, these

plants

are milled into smaller pieces to prepare them for

further

processing. The milled plant material is

then

subjected to a chemical treatment that breaks down cellulose into simpler

sugars

. These

sugars

are collected and processed to make them suitable for fermentation.

Next,

the

sugars

are fermented by adding yeast or other microbes.

This

biological process converts the

sugars

into

ethanol

. The resulting

ethanol

is

then

separated and purified through distillation and filtration to ensure it meets the required quality standards.

Finally

, the purified

ethanol

is utilized as a renewable fuel in vehicles, including cars, trucks, and aeroplanes.