Approximately of american children are likely to experience the breakup of their parents' marriage. one-third

More than half of American children are born to married parents. Unfortunately, half of these parents broke up before the children reached 16 according to a survey made by Broken Britain.  And also, the latter made a shocking news that approximately half (50%) of American children at 16 are likely to experience the breakup of their parents’ marriage. 

permafrost layer, it exists beneath a layer of soil, rock or sediment.