Petroleum is the main source of energy for transportation.
petroleum
Petroleum.
Chemical energy
No it is its own source of energy
Currently, human's conventional source of energy is fossil fuel.
Fossil fuel is not energy its a energy source and yes there is more energy sources besides the fossil fuel like coal and others.
Fossil fuels (coal, oil and natural gas) are a non renewable source of energy.
yes
Solar Energy
fossil fuel
It is not a fossil fuel it is a renewable energy source
i may not be right, but the energy source should be fossil fuel