10-04-2017
Chemistry

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what is oxygen I really don't know ad people are mean

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darkmirror darkmirror

10-04-2017

oxygen is a element in the periodic table. with out oxygen we would not have water because H2O it's made with oxygen. we breathe oxygen, we can't live without it.

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sd123456789 sd123456789

10-04-2017

The thing you breathe

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