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Discussion :: Miscellaneous World Geography

  1. The continents of the world are mainly composed of

    2. A.

     Core
    B.

     Mantal
    C.

     Sial
    D.

     Sima

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    Answer : Option C

    Explanation :

    The continents of the world are mainly composed of Sial. The main mineral constituents of the continental mass are silica and alumina.It is thus called sial (si-silica and al-alumina).

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