Question

conservation of black gold petroleum detail one pages​

Answer 1

Explanation:

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Answer 2

Answer:

Petroleum is considered to be as costly as the gold.That's why it got it's name as "Black gold".Black is due to it's colour.

or

Petroleum is also known as Black Gold - because when crude oil is extracted from the land it is black in color. People call it gold because of its oils and value . It is very difficult to find. So it is called Black Gold.

both are correct

Explanation:

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