Question

fossil fuels (coal, oil, natural gas) are not renewable. energy sources that are not fossil fuels are called alternative energy sources. which alternative energy is not renewable? solar nuclear

Explanation:

Renewable energy sources are those that can be replenished naturally over time. Solar energy is derived from the sun and is renewable as the sun's energy is continuously available. Nuclear energy relies on nuclear fuels (like uranium) which are finite and non - renewable as they cannot be replenished on a human - time scale. Also, nuclear energy is an alternative energy source (not a fossil fuel) and is non - renewable.

Answer:

Nuclear