The Oxygen reference article from the Simple Wikipedia on 01-May-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Oxygen

Oxygen has the chemical symbol O and is one of the gases found in the air we breathe in. It is colourless, odourless (it does not smell) and invisible (you cannot see it).

We need oxygen to live. When we breathe in, air goes into our lungs and the oxygen goes into our blood (the bloodstream).

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