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where does the oxygen come from


4431 day(s) ago

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Gnome
the oxygen is formed with other gases like nitrogen etc, and is produced by trees.

Posted 4363 day ago

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Loz
When Earth was first created, the atmosphere was made of what came out of volcanos.. this was mainly Carbon Dioxide. Later oceans were formed.. and bacteria developed that could photosynthesise, these later turned into a mass of plants that give us the oxygen we have today.

Posted 4412 day ago

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