Question

what is called black gold????​

Answer 1

Explanation:

Black gold is a term applied to oil or petroleum, which is black when it comes out of the ground and is worth a great deal of money.

Answer 2

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Explanation:

Crude oil is the virtual backbone of our modern lives. Huge amounts of money and sophisticated equipment are required for bringing out the petroleum from the subsurface. Thus, its value is comparable to gold. Therefore , Petroleum is called black gold.