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Great Significances of Oxygen | Must Read

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Great Significances of Oxygen | Must Read

Post  bejoy on Tue Oct 25, 2016 1:17 am

Oxygen is a tasteless gas. Oxygen has no smell or color. It comprises 22 per cent of the air. Oxygen is found in the human body, the Sun, oceans and the atmosphere.http://bit.ly/2eq2Tcr

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