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2015-07-27T09:57:44+08:00

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I think its nitrogen..
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It is oxygen.Ang tanong niyo ba ganito:pero bakit ito ay abundant sa crust eh nasa air naman?here is the answer:because oxygen mix with other elements.
2015-07-27T16:29:24+08:00
Oxygen is the most abundant element in the earth crust, the second is the silicon, and the most abundant metal in the earth crust is the aluminum.
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