Q363
The continents of the world are mainly composed of
A.
Core
B.
Mantal
C.
Sial
AnswerD.
Sima
Answer: Option C
Solution
Answer: Option C
Solution:
The continents of the world are mainly composed of Sial. The main mineral constituents of the continental mass are silica and alumina.It is thus called sial (si-silica and al-alumina).