It takes millions of years to make them and hundreds of years to burn them. Demand far outstrips the capacity for them to be replaced
Yes it is a fossil fuel.
. Fossil fuels (such as coal, petroleum and natural gas) and nuclear power (uranium) [wikipedia]
No its not a fossil fuel
Uranium is not a fossil fuel and cannot be a fossil fuel.
Oil is a fossil fuel.
a living fossil fuel.
Fossil
Fossil fuel is cheap
Sorry, no, wool is not a fossil fuel.
Fossil fuel
Gasoline is a fossil fuel.
the most fossil fuel that humans use is the solid fossil fuel. and it is coal