chemistry
posted by Ruth .
Fuel oil and bitumen is 38% in demand
Petrol and Naptha is 27% in demand
Diesel is 23% in demand.
A question asks: Why are these fractions in demand?
I am not sure how to answer this questions and please advise me to how to answer this question.
Thanks in advance

chemistry 
DrBob222
Fuel oil is used for heating homes and industrial plants. Bitumen is another word for asphalt and it is used in a variety of ways. Petrol and diesel are used for automotive and other engines. Naphtha is used a a solvent. I suppose the law of supply and demand is what creates the demand. There is a demand because they are useful for a number of purposes. You can edit this to fit the question.

chemistry 
Ruth
Thank you very much, this information has helped to answer my question.
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