Logg på
WAEC - Geography (2011 - No. 4)
The mineral contents of the upper part of the earth's crust are collectively called the sial because it is composed mainly of
silica and olivine
alumina and olivine
silica and alumina
alumina and phosphate
Kommentarer (0)
Logg inn for å kommentere
Annonse
Tillat at javascript laster denne siden ordentlig
