Question

The crust of the earth is mainly composed of what element

Answer 1

Tarbuck, Earth's crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 %; aluminum, 8.1 %; iron, 5 %; calcium, 3.6 %; sodium, 2.8 %, potassium, 2.6 %, and magnesium, 2.1 %

Answer 2

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• Oxygen
• Silicon
• Aluminum
• Sodium
• Magnesium
• Potassium
• Calcium