I checked out books four weeks before the paper was due and spent the first two weeks getting information and making notes of what I read.
An additional 45% is transformed into other fuels such as propane, jet fuel, diesel fuel, home-heating oil, and heavy fuel oils for industries, ships, and electric power plants.
Chemical energy consists of all the energy bound up in fossil fuels and biomass, and it supplies over 90% of the current US energy needs.
Commonly used fossil fuels are oil, natural gas, and coal.
Oil is made of a mixture of hydrocarbons, which consist of carbon and hydrogen atoms.
It is found underground between folds of rock and in areas of rock that are porous and contain the oils within the rock itself.