Question : The main mineral constituents of the continental mass are ____ and ____.
Option 1: silica, magnesium
Option 2: silica, alumina
Option 3: oxygen, carbon
Option 4: alumina, magnesium
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Correct Answer: silica, alumina
Solution : The correct answer is silica, alumina.
Alumina and silica comprise the bulk of the continental mass's mineral composition. As a result, it is referred to as sial (si-silica and al-alumina). The continental crust is made up of sial. Silica and alumina are referred to as sial. The oceanic crust has a comparable makeup. The terms silica and magnesium are referred to as simas.
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