Question

define refining and why is it important to rifine petroleum​

Answer 1

Crude oil cannot be used as it occurs in nature, other than burning for fuel, which is wasteful, It must be refined to manufacture finished products such as gasoline and heating oil. ... Crude oil must therefore be further processed using both heat and pressure to improve qualities and meet market demand.

Answer 2

Answer:

refining is the process of reducing the impurities in a substance.

It can't be used as it occurs in nature other than burning of fuel which is wasteful it must be refined to manufacture finished products. It must therefore be further processed to improve qualities and meet market demand.