User:Valdir1506/sandbox

Petroleum (L. petroleum, from Latin: 'petra' (rock) + Latin: oleum (oil)[1][2]) or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. A fossil fuel, it is formed when large quantities of dead organisms, usually zooplankton and algae, are buried underneath sedimentary rock and undergo intense heat and pressure.

petroleo desde petra (pedra)oleum ou oleo cru oleo è (uma)