When do lake turnovers occur?

+3 votes

 

  

in response to biotic factors

  

when water on top of the lake is denser than water below

  

when the organisms in deep, oxygen-poor regions signal for more oxygen

  

in the winter and summer

 

asked Jan 1, 2013 in Biology by anonymous
    

1 Answer

+1 vote

 

when water on top of the lake is denser than water below

 

answered Jan 1, 2013 by Luffy ~Expert~ (977 points)



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