A) Oxygen, Aluminium, Silicon, Iron
B) Oxygen. Silicon, Iron, Aluminium
C) Oxygen. Iron, Aluminium, Silicon
D) Oxygen, Silicon, Aluminium, Iron
Correct Answer: D
Solution :
The most important minerals (in percentage terms) that constitute the Earth are: Oxygen (46.6 %), Silicon (27.7 %). Aluminium (8.1 %), Iron (5.0%), Calcium (3.6 %), Sodium (2.8 %), Potassium (2.6 %) and Magnesium (2.1 %).You need to login to perform this action.
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