Wenny+Lan+-+Biofuel

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 * Biofuel **
 * Biofuels** are a wide range of fuels which are derived from biomass and it can be produced from any carbon source that is easy to replenish.
 * Bioethanol** is an alcohol made by fermenting the sugar components of plant materials and it is made mostly from sugar and starch crops. Cellulosic biomass (e.g. trees and grasses) also contribute to ethanol production. Ethanol can be used as a fuel for vehicles, but it is usually used as a gasoline additive to improve vehicle emissions.
 * Biodiesel ** made from vegetable oils, animal fats or recycled greases. Biodiesel can be used as a fuel for vehicles in its pure form, but it is usually used as a diesel additive to reduce levels of particulates, which are tiny particles of solid or liquid suspended in a gas or liquid, and also to reduce carbon monoxide, and hydrocarbons that are emitted from vehicles.