Something that contains no petroleum is petroleum-free.
It's the kind of energy that is obtained from burning petroleum products.
Petroleum is not considered a rock. The definition of rock includes the word 'solid'.
refined petroleum used as fuel for internal combustion engines.
"Black gold" is a term used for petroleum.
Which are not renewable are called as nonrenewable resources. Examples are water , petroleum ,etc...
No. Petroleum was not included as part of the original NAFTA negotiations.
A "natural plastic" is a material created from biological sources other than petroleum (oil).
Those not derived from petroleum or coal, such as solar engergy, wind energy.
NO- by definition, a slave is not a free man.
A free man .
a way that is free
No, you can't use a high definition decoder to access free internet.