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By-product of burning hydrogen, taken from water, as a fuel |
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This would not be a result of reducing energy waste. |
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Has the highest net energy ratio over it's estimated lifetime |
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Name for a system that produces 2 useful forms forms of energy from one fuel source. |
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Not a method for saving significant amounts of energy. |
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A fuel cell combines _________ and _________ to produce electricity. |
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A _______ absorbs and stores heat from the sun directly within a structure. |
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Passive solar heating system |
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Disadvantage of using solar energy to generate high temperature heat and electricity |
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Has a high cost on construction, high environmental impact, and the potential to force the displacement of people and wildlife. |
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Has more advantages and fewer disadvantages than any other source. World's fastest growing energy source. |
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