Question

The SIAL layer of the earth is made up of the material which is rich _____ in and_____. Fill in the Blank

Answer 1

mica and magnesium
hope this answer works

Answer 2

Answer:

The SIAL layer of the earth is made up of the material which is rich in silicates and aluminium.

Explanation:

The answer to this question can be found quite literally in the question itself as the word 'SIAL' applies to the nature of the top layer of the crust of Earth, including silicate-rich rocks and aluminium minerals.

Therefore 'SI - AL' phonetically indicates the presence of silicate and aluminium. Sometimes this is equated to the crust of the mainland because it is not available in the broad oceanic basins, but "SIAL" is not a flat tectonic term but a geochemical one.