This phenomenon has important ecological implications in that if ice were to be denser than water,then the lakes,exposed to low temperatures would start freezing from the bottom up.

 
  • 这种现象有着重要的生态学意义。如果冰比水的密度大,那么暴露于低温之下的湖泊将会从底部开始向上发生冰冻现象。
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