gas hydrates
Coal, oil and natural gas are Americas most "readily" usable and presently abundant sources of energy.
nuclear
geothermal
Ground Water!
solar energy
Coal
Coal, oil and natural gas are Americas most "readily" usable and presently abundant sources of energy.
nuclear
geothermal
beef
Coal is the most abundant in the USA
Meat and Cheese
The sun
Solar.
nitrogen
apratritrie
coal