Because they are remains of organisms preserved in rocks
Because coal and petroleum are themselves fossil fuels.
Fossil fuels are: coal methane, petroleum.
Oil, Coal, and Petroleum
Fossil fuel. Also, natural gas is in the category of fossil fuels.
Petroleum, coal, and natural gas are a few types of fossil fuels
I believe the term "fossil fuels" is used for things that burn, in a chemical reaction - like coal and petroleum. Also, "fossil fuels" implies that the fuel is the remainder of fossils - as is believed to be the case with petroleum and coal.I believe the term "fossil fuels" is used for things that burn, in a chemical reaction - like coal and petroleum. Also, "fossil fuels" implies that the fuel is the remainder of fossils - as is believed to be the case with petroleum and coal.I believe the term "fossil fuels" is used for things that burn, in a chemical reaction - like coal and petroleum. Also, "fossil fuels" implies that the fuel is the remainder of fossils - as is believed to be the case with petroleum and coal.I believe the term "fossil fuels" is used for things that burn, in a chemical reaction - like coal and petroleum. Also, "fossil fuels" implies that the fuel is the remainder of fossils - as is believed to be the case with petroleum and coal.
Peat, Coal and Petroleum
Fossil fuels.
petroleum and coal are both non renewable resources. this means that they can not be replaced in a reasonable amount of time. petroleum and coal also belong to a family of resources called fossil fuels. these are resources that are made from dead plant and animal matter. other forms of fossil fuels are gasoline, and natural gas.
. Fossil fuels(such as coal, petroleum, and natural gas
The known fossil fuels are coal, petroleum, natural gas, lignite, bitumen and peat
petroleum and natural gas