• Question: Why does the earth have oxygen and all the other planets do not?

    Asked by Lucy2004simmons to Peter on 18 Nov 2016.
    • Photo: Peter Boorman

      Peter Boorman answered on 18 Nov 2016:

      Hi Lucy,

      THAT is a great question! The main reason (I believe) is because the Earth is the only known planet with *plants*, which (through photosynthesis) convert carbon dioxide into oxygen.