AP BIOLOGY

Detailed explanation-1: -Detailed Solution. The correct answer is Uranium. Uranium is not a fossil fuel instead it is a radioactive element and hence nuclear fuel.

Detailed explanation-2: -Uranium is not a fossil fuel. These energy sources are considered nonrenewable because they can not be replenished (made again) in a short period of time. Renewable energy sources can be replenished naturally in a short period of time.

Detailed explanation-3: -Hence Coal, petroleum, and natural gas are fossil fuels but sunlight is not a fossil fuel.

Detailed explanation-4: -Uranium is the most widely used fuel by nuclear power plants for nuclear fission. Nuclear power plants use a certain type of uranium-U-235-as fuel because its atoms are easily split apart.

Detailed explanation-5: -Uranium is an element and is used in nuclear power plant to produce nuclear energy. Hence it is not classified under fossil fuel.