How much of the electricity produced in the United States come from nuclear power plants?
20%
What type of car has a combustion engine and an electric motor?
hybrid
What type of alternate energy source involves the burning of sugar cane fibers?
biomass
What type of alternate energy source involves producing steam when small atoms combine?
nuclear fission
What is the energy source of a hybrid car?
gasoline
Where does most of the energy that is used in the United States come from?
burning fossil fuels