fill the blank
is also known as Black Gold.
Answers
Answered by
0
Answer:
Answer:
Petroleum or Crude Oil.
The Petroleum is called black gold because when the crude oil is extracted from the soil below, it is black in colour. Petroleum is very expensive like gold. Comparing its high value with gold in terms of properties and moneywise; it is regarded as black gold.
Hope this helps you.
Similar questions