Oxygen (Extract)

Oxygen (O) is a chemical element. In nature, oxygen is a gas with no color or smell. Oxygen is a very important element because it is a part of the air people breathe and the water people drink.

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Citation

Simple English Wikipedia: “Oxygen”. Retrieved from https://simple.wikipedia.org/wiki/Oxygen on 20 Aug 2015. (link). Adapted and reproduced here under a CC BY 3.0 license.