'The Earth's crust consists of about 46% oxygen; this element is second most abundant at about 28%'
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GENERAL SCIENCE: The Earths crust consists of about 46% oxygen; this element is second most abundant at about 28%
The Earth's crust consists of about 46% oxygen; this element is second most abundant at about 28%
The Earth's crust consists of about 46% oxygen; this element is second most abundant at about 28%
GENERAL SCIENCE
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GENERAL SCIENCE