energy resources
type: Concept
narrower: fuel

personal consumption and waste
type: Concept
narrower: fuel

gaseous fuels
type: Concept
broader: fuel

fuel
type: Concept
definition: Air pollution from vehicle exhaust emissions is the end result of burning fuels to power the car. This has caused much environmental concern. [Source: Green Consumerism: An A-to-Z Guide; Fuel]
narrower: gaseous fuels
narrower: nuclear fuels
narrower: solid fuels
narrower: liquid fuels
narrower: alternative fuels
narrower: petrol
broader: energy resources
broader: personal consumption and waste

nuclear fuels
type: Concept
broader: fuel

solid fuels
type: Concept
broader: fuel

liquid fuels
type: Concept
broader: fuel

alternative fuels
type: Concept
broader: fuel

petrol
type: Concept
broader: fuel

concepts
type: Collection
type: ConceptGroup
member: fuel