Question

Petroleum is very important and due to its great commercial importance, is called _______________​

Answer 1

Answer:

black gold is crrect ansr

Explanation:

Many useful substances are obtained from petroleum and natural gas. These are termed as 'Petrochemicals'. ... Due to its great commercial importance, petroleum is also called 'black gold'.

Answer 2

Answer:

petroleum is very important and due to its great commercial importance is called black gold