Which of the following is NOT considered an alternative source of energy?
Which of the following is NOT considered an alternative source of energy?
A. wind and water energy
B. geothermal energy
C. solar energy
D. natural gas
Geothermal energy is not used worldwide because it is
A. inefficient.
B. geographically limited.
C. nonrenewable.
D. very costly
Fossil fuels include
A. hydrogen, oxygen, and acetylene.
B. wood and charcoal.
C. dinosaur bones.
D. coal, natural gas, and oil.
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