Her growing debts 'preyed on her mind'. [=she worried about her growing debts]
Too often elderly people are 'easy prey' for swindlers and other criminals.
The thought that he could have done better 'preyed on his mind'.
(..) Good I will give you the basic that should know. Since you want to become in a rebellious youth. Well, then when you have your prey, the time it is everything, you have to make sure of conserving all that is meat. Alone you will have one hour to clean it, but if the climate doesn't accompany (..)2007 Into the Wild