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24-09-2020
Biology

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1. What percentage of the weight of Earth's crust is made of silicon?

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24-09-2020

Answer:

35%

Explanation:

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24-09-2020

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.

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