resources and conservation
type: Concept
narrower: biofuels

concepts
type: Collection
type: ConceptGroup
member: biofuels

biofuels
type: Concept
definition: Biofuels have been promoted as one alternative to the reliance on fossil fuels for the world's energy needs, but the use of biofuels is controversial. The term biofuel (or agro-fuel) refers to the conversion of agricultural crops into forms of liquid energy that can be blended with or substituted for gasoline and diesel fuel. [Source: Encyclopedia of Global Studies; Biofuels]
broader: resources and conservation
broader: key cases and current trends

key cases and current trends
type: Concept
narrower: biofuels