That it is buried before it can decompose.
Fossil fuels are the forms of energy made from the remains of dead plants and small creatures. Examples of fossil fuels are coal and natural gas.
A fossil.
a fossil.
It is called replacement .
organization
Fossil
Fossil.
Fossil
Fossil
fossil
A Petrified fossil dissolved minerals replace and remains of an organism and then harden to form rock.
Fossil
fossil.
Fossil fuel
fossil (apex)
fossil
fossil