Because they are a very good fuel source for combustion engine vehicles. Also they are used in the production of plastics, cosmetics, and many other items.
Yes it is a fossil fuel.
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
The main products from petroleum are gasoline, motor oil, diesel fuel, kerosene, plastic products, engine grease, cosmetics, synthetic rubber, paint, and many misc. products.
Sorry, no, wool is not a fossil fuel.
Fossil fuel
Gasoline is a fossil fuel.