What Do You Mean By Fossil Fuels?
What Do You Mean By Fossil Fuels? Photograph by Hywit Dimyadi/Shutterstock. Encyclopedic Entry Vocabulary. Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth’s crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels. What defines fossil