• Question: How did life begin?

    Asked by anon-208278 to Tori, Titus, Stuart, Hannah, Gill, Alessandro on 13 Mar 2019.
    • Photo: Hannah Dalgleish

      Hannah Dalgleish answered on 13 Mar 2019:

      As far as we know the earliest sign of life began almost 4,000 million years ago. We know this because of fossils called stromatolites (https://simple.wikipedia.org/wiki/Stromatolite).
      Formed by cyanobacteria (https://simple.wikipedia.org/wiki/Cyanobacteria), we think cyanobacteria are the first organisms to perform photosynthesis. This suddenly put a lot of oxygen into the atmosphere which then allowed for life as we know it exist!

    • Photo: Stuart Higgins

      Stuart Higgins answered on 13 Mar 2019:

      I didn’t know that either – that’s really interesting 🙂

    • Photo: Gill Harrison

      Gill Harrison answered on 13 Mar 2019:

      As a sonographer I can only go with what I know and you & I will have begun by being a bundle of cells.As for life itself, I think Hannah has the covered – I’m learning so much from all your questions too.

    • Photo: Titus Mutwiri

      Titus Mutwiri answered on 14 Mar 2019:

      Every living thing is made of cells. it is believed that to bacteria was the very first agent on earth and it evolved into everything else we have. The bacteria is a prokaryote meaning it has no nucleus or pro- before Karyote – nucleus. I would say that life began at the level of the bacteria

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