what is black gold?why is it called so?
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YOUR ANSWER: Petroleum is known as black gold. This is bcoz when this petroleum comes to land, it is great deal of money. That's why it is known as black gold.
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YOUR ANSWER: Petroleum is known as black gold. This is bcoz when this petroleum comes to land, it is great deal of money. That's why it is known as black gold.
HOPE IT HELPS!!!
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