What was the first life form on earth?

Question

This is for school

Answer 1

Most recent evidence shows that the first life forms were microbial (micro-organisms).  This was recently reported in Nature

https://www.nature.com/articles/nature21377.epdf?referrer_access_token=qqLSC3mRUbO2TGhFk8uI0dRgN0jAjWel9jnR3ZoTv0OZLj_4udImjr9-hwwqMBMYbZa4nYk3vfqQ-rbmVfHiA0UMiaCogl7twTIHkVgCNKb-wv2_YarMXDQnjSj0lgLS9epsM3YH77RC3x4BcLxgmacnpfi4Ro8AcMD-bshVOSnLk6sDuykJIW6h_IF8XbDdh_cFR7Oi-dZrSVLSsgN5Yg%3D%3D&tracking_referrer=www.bbc.com