Arrange the composition of earth crust in descending order 1 Oxygen 2 Iron 3 silicon 4 Aluminium ........

Geography Earth Geology

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Arrange the composition of earth crust in descending order:

1. Oxygen.

2. Iron.

3. silicon.

4. Aluminium.

3-4-2-1

2-3-4-1

1-3-4-2

1-2-3-4

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Explanation:

Option 3 is correct:
According to "Essentials of Geology", Earth's crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; sodium, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent.