• Question: How did animals get on earth?

    Asked by Googoogaming to Aimee, Gemma, Hussain, Robert, Ross on 14 Nov 2015.
    • Photo: Robert Lees

      Robert Lees answered on 14 Nov 2015:

      Animals evolved from simple, single-celled life over billions of years (1 billion = 1,000,000,000). Scientists are still working out how multicellular life (including animals) came from single-celled life. There are a lot of theories, which are hard to prove as there is very little evidence (fossils) of all of the species that came before the animals we know of today!

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