Three main problems arise when the Sun is not shining. These may be categorized as

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     collection, conversion, and distribution.
      indoor, outdoor, and rooftop.
      water heating, air heating, and generation of electricity.
      collection, conversion, and storage.
asked Jun 25, 2012 in Environmental Science by anonymous
    

1 Answer

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collection, conversion, and storage.
answered Jun 26, 2012 by Geodude ~Top Expert~ (9,680 points)

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