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    Geography Form Three

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    • Quiz Title:

      Concentric Zones of the Earth

      Quiz Lesson:

      Three concentric layers of the earth are crust, mantle and core respectively. Each layer is separated from the other by transition layers. Earth's crust has two layers: Sima which form oceanic floor and Sial which form continental crust, it combines with upper mantle to form lithosphere. After lithosphere there is deep extension to lower mantle up to outer and inner core.



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