Crude oil is so valuable that it is often called
A resource that forms at a much slower rate at which it is consumed is known as
Petroleum and natural gas are generally removed from Earth's crust by
Sea water is left in shallow pans to
Energy we use to heat our homes, drive our cars and run our computers comes from
Burning petroleum causes a major atmospherically problem known as
Petroleum, gasoline, kerosene, diesel and paraffin wax are yielded to fractional distillation of