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  1. R

    what are the characteristics of heat?

    any 3 characteristics of heat. Please!!!!
  2. R

    Why do we speak of united nation, sign treatise and...?

    ...make all possible efforts to derange all other nations? What really is nation--is it made of geography or politics? Why then geography books do not speak of nation but shows territories only? If politics is united nation, then why do we have so many different politics that never agree with...
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