resources and conservation
type: Concept
narrower: petroleum

pollution
type: Concept
narrower: petroleum

liquid fuels
type: Concept
narrower: petroleum

concepts
type: Collection
type: ConceptGroup
member: petroleum

petroleum
type: Concept
definition: Petroleum, or crude oil, is a nonrenewable natural resource that has had a tremendous beneficial influence on human society. With a name derived from Latin petra (rock) and oleum (oil), petroleum represents the world's most important energy resource. [Source: Encyclopedia of Environment and Society; Petroleum]
broader: resources and conservation
broader: pollution
broader: liquid fuels