Biofuels are fuels, such as ethanol, produced from living organisms or from metabolic by-products (organic or food waste products). In order to be considered a biofuel the fuel must contain over 80 percent renewable materials. It is originally derived from the photosynthesis process and can therefore often be referred to as a solar energy source.
Some of the agricultural products used in biofuels are: corn, sugarcane, soy
- biofuels. Alternative Energy News.