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Chemistry
HarlandHolz
Oct 6, 2018, 1:34:10 AM
22
What are the most common elements in the earths atmosphere
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lopezstephanie6
Oct 6, 2018, 5:49:17 AM
oxygen 47% silicon 28% aluminum 8% iron 5% magnesium 2% calcium 4% sodium 3% potassium 3%
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