Question

One Mark Questione:

1. SIMA layer is comprising mainly with mineral constituents of

A Silica and Alumina
B. Silica and Zinc
C. Silica and Magnesium
D. Silica and Iron

samacheer 7th social science geography ​

Answer 1

Answer:

The oceanic crust mainly consists of silica and magnesium; it is therefore called sima (si-silica and ma-magnesium)

Explanation:

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