• Question: Do we know any other sources(apart from plants) which produce oxygen?

    Asked by jeevan to Arttu, Ceri on 24 Jun 2011.
    • Photo: Arttu Rajantie

      Arttu Rajantie answered on 24 Jun 2011:

      It is easy to produce oxygen from water using electricity, but in nature I don’t think there are any important sources of oxygen other than plants. Therefore having free oxygen in the atmosphere is a good sign of life.