Question

the mineral constitutes of silica and alumina of the Earth's crust is called as​

Answer 1

Answer:on the ocean floors. The main mineral constituents of the continental mass are silica and alumina. It is thus called sial (si-silica and al-alumina). The oceanic crust mainly consists of silica and magnesium; it is therefore called sima (si-silica and ma-magnesium) (Fig.

Explanation:

Answer 2

Answer:

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