• Question: Is it possible for the world run out of oxygen?

    Asked by aleks727 to Amy, Karen, Sarah, Will on 20 Jun 2012.
    • Photo: Sarah Martin

      Sarah Martin answered on 20 Jun 2012:

      Hi aleks727,

      If you mean Earth, then no – just about all the atoms that are on Earth will stay on Earth, they might just be changed from one form to another. So before there were plants on the planet there was lots of CO2 in the atmosphere, then plants turned that into O2 and the carbon into sugar… So the oxygen remains as an atom either way! And there are lots of plants making O2 for us to breathe, so that’s safe too.

      🙂
      Sarah

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