why are they called fossil fuels
Answers. Relevance. Rating Newest Oldest. Best Answer: The reason coal, oil and natural gas are called fossil fuels is that they are formed from the fossilized remains of ancient plants & animals.With the right amount of heat and pressure (as well as a tremendous amount of time), these fossils will be converted into coal, oil, and natural gas. Source(s):nswers. Relevance. Rating Newest Oldest. Best Answer: The reason coal, oil and natural gas are called fossil fuels is that they are formed from the fossilized remains of ancient plants & animals.