Oil refinery and sugar mill are classified under which industries? Option: Secondary, Tertiary, None of the above, Primary

Oil refinery and sugar mill are classified under which industries?

What is the primary function of downstream companies in the oil and gas industry?

What are the three main segments of the oil and gas industry?

What role do midstream companies play in the oil and gas industry?

Which segment of the oil and gas industry is responsible for the exploration and extraction of crude oil?

Identify the activity which does not support trade.