What is non metallic mineral is also called black gold?
Answers
Answered by
1
Answer:
coal or ppetroleum.
Explanation:
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Answered by
2
Answer:Actually, any business which provides a lot of money is known as Goldmines. As both Coal & Petroleum handles lot of money so they called as Black Gold. Crude oil comes out of the ground as black, so it is called as black gold.
Explanation:
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