Question

which non - renewable energy source is most efficient? nuclear energy coal crude oil petroleum

Explanation:

Nuclear energy is a non - renewable energy source. It has a high energy density. A small amount of nuclear fuel (such as uranium) can produce a large amount of energy through nuclear fission. In contrast, coal, crude oil, and petroleum, while also non - renewable, have lower energy densities per unit mass or volume compared to nuclear fuel. For example, the energy released from the fission of one uranium atom is much greater than the energy released from the combustion of one carbon (in coal) or hydrocarbon (in oil/petroleum) molecule.

Answer:

nuclear energy