46.6% oxygen (o) 27.7% silicon (si) 8.1% aluminum (al) 5.0% iron (fe) 3.6% calcium (ca) 2.8% sodium (na) 2.6% potassium (k) 2.1% magnesium (mg) > consider the layers of the earth seen here. where would you find the elements listed above? a) atmosphere b) core c) crust d) mantle
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46.6% oxygen (o) 27.7% silicon (si) 8.1% aluminum (al) 5.0% iron (fe) 3.6% calcium (ca) 2.8% sodium...
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