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In atmosphere what is the percentage of earths crust |
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Answer» 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. |
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