The process of fermentation can make fuels. This involves the use of bacteria
or yeast to break down sugars by anaerobic respiration.
Ethanol can be made when yeast is used to break down glucose.This produces
Glucose à ethanol + carbon dioxide + Energy
The glucose is derived form sugar cane or maize starch and the ethanol produced is
distilled to separate it from the yeast.
Biogas is a fuel, which consists of methane and carbon dioxideon scale of
Biogas is produced from animal and plant waste which is placed in a generator
with microorganisms, which are kept at a constant temperature to produce biogas.