When it is burned to produce electricity (petroleum, natural gas, coal) emits the most carbon dioxide. This fossil fuel accounted for ( 1/3, 1/2, 3/4 ) of the electricity generated in the United States and emitted 68 percent of the carbon dioxide produced by generating electricity.
When burned to produce electricity, coal emits the most carbon dioxide. This fossil fuel accounted for 1/3 of the electricity generated in the United States and emitted 68 percent of the carbon dioxide produced by generating electricity.
