most people say that its unknown how discoverd petrolum other people say that it was discoverd by Samuel and Edwin Drake
No one invented petroleum, it is a naturally occurring substance.
Gasoline was not invented since it is a natural by-product of petroleum. It is produced through the distillation of crude petroleum.
To satisfy Claudias needs of water
It's a cheap substitute to petroleum invented by Black Plague Protrolium.
Gasoline was not invented, it is a natural by-product of the petroleum industry, kerosene being the principal product. Gasoline is produced by distillation, the separating of the volatile, more valuable fractions of crude petroleum. However, what was invented were the numerous processes and agents needed to improve the quality of gasoline making it a better commodity.
It wasn't. Two types of tar exist naturally: Petroleum tar and Pine tar.
Noone is credited with the invention of gasoline because it is a by-product of petroleum product like kerosene.
At first, it wasn't invented at all. It was harvested from the rubber tree in Brazil (Hevea Brasiliensis). Synthetic rubber came later (made from petroleum products).
There are a number of synthetic sources that plastic could be replaced with if petroleum and coal were exhausted. These sources are being invented and created right now.
petroleum refining is petroleum refining
Something that contains no petroleum is petroleum-free.
Petroleum is a liquid.