Including environmental costs, wind power is the cheapest source of electricity.
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Q39: Ethanol production has resulted in
A)decreased water usage.
B)increased
Q40: Geothermal energy can be used for which
Q41: Hydrogen may be a future energy source
Q42: Governments do not have the power to
Q43: Fossil fuels are artificially cheaper than renewable
Q45: Overall, nonrenewable resources have a lower net
Q46: Ethanol is a controversial biofuel because it
Q47: Photovoltaic solar cells work on cloudy days.
Q48: Electric-gasoline powered vehicles are called _.
Q49: We can make energy use more sustainable
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