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1. What is the longest causeway? 2. Who designed the Golden Gate Bridge?
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1. How do renewable energy resources differ from fossil fuels? 2. How significant is the role of renewable energy resources in the United States?
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What are the advantages and disadvantages of solar power?
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What is the difference between passive solar energy systems and active solar energy systems?
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When were solar domestic hot water systems first developed?
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How is solar energy converted into electricity?
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1. How does a solar cell generate electricity? 2. When were photovoltaic cells developed?
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1. Where is the largest solar generating plant located? 2. Who invented the duel cell?
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