Nuclear energy is an alternative to fossil fuels.

What are two qualities of nuclear energy that make it appear sustainable?

What are two qualities of nuclear energy that make it appear unsustainable?

Two qualities of nuclear energy that make it appear sustainable are its low carbon emissions and its ability to produce large amounts of energy from a small amount of fuel.

Two qualities of nuclear energy that make it appear unsustainable are the long-term storage and disposal of radioactive waste, as well as the potential for accidents and the associated environmental and health risks.