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