Which of the following is true?
A) Ethanol from corn is efficient.
B) Biofuels help to hold down carbon dioxide emissions.
C) Power-generating by natural gas is costlier than coal in the United States.
D) Coal is the cheapest way to generate power in most parts of the world.
E) Oil sands in Canada and oil shale in the U.S. West are scarce.
Correct Answer:
Verified
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