Question

what are fossil fuels?

Answer 1

Fossil fuels are sources of energy that formed from the accumulated remains of living organisms that were buried millions of years ago. Pressure, heat and time allow the organic matter to transform into one of the three major types of fossil fuels, which are coal, oil and natural gas.

Answer 2

hey mate here is your answer

A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] The age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] Fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] Other commonly used derivatives include kerosene and propane. Fossil fuels range from volatile materials with low carbonto hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. Methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

I hope this helps you
please mark my answer as brainliest