littleman15 littleman15

01-11-2016
Chemistry

contestada

What are the most common elements in the earths atmosphere

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BulletProof18 BulletProof18

01-11-2016

oxygen 47%
silicon 28%
aluminum 8%
iron 5%
magnesium 2%
calcium 4%
sodium 3%
potassium 3%

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