Flate-plate collectors

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    catch manure under livestock stalls for later production of methane gas.
     catch the force of the wind to spin a turbogenerator.
     are large arrays of photovoltaic cells.
     are used to heat water by solar energy.
asked Jun 25, 2012 in Environmental Science by anonymous
    

1 Answer

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are used to heat water by solar energy.
answered Jun 26, 2012 by Geodude ~Top Expert~ (9,680 points)

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