The dominant elements in continental crust are
A)silica and aluminum.
B)silica and magnesium.
C)magnesium and aluminum.
D)potassium and iron.
E)calcium and iron

Question

Quizplus · Accepted Answer

Silica and aluminum are the two most abundant elements in continental crust, making up over 75% of its composition. Magnesium, potassium, and iron are present, but in much smaller amounts. Calcium is also present, but not in significant quantities compared to silica and aluminum.

The Dominant Elements in Continental Crust Are