What is the definition of a fossil fuel?

Question

fuels formed from fossils

fuels formed from layers of rock

fuels formed from once-living organisms

fuels formed when fossils are burned

Answer 1

A fossil fuel is a natural fuel such as coal, oil, or natural gas that is formed from the remains of once-living organisms that underwent geological processes over millions of years.

Answer 2

fuels formed from fossils

fuels formed from layers of rock

fuels formed from once-living organisms

fuels formed when fossils are burned

Answer 3

Of the options you provided, the correct definition of a fossil fuel would be: fuels formed from once-living organisms. Fossil fuels are organic materials that have undergone natural processes of decomposition and chemical transformation over millions of years.