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Geography
Kristina Banks
9 April, 21:46
What is the main composition of the earth?
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Macie Richmond
9 April, 23:13
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Tarbuck, 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,
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