Courtesy : Bachelor of Science Biology (CBZ) – Chemistry, Botany, Zoology Smart Girl History of life Life timelineThis box: viewtalkedit−4500 —–—–−4000 —–—–−3500 —–—–−3000 —–—–−2500 —–—–−2000 —–—–−1500 —–—–−1000 —–—–−500 —–—–0 —WaterSingle-celled lifePhotosynthesisEukaryotesMulticellular lifePlantsArthropods MolluscsFlowersDinosaursMammalsBirdsPrimatesHadeanArcheanProterozoicPhanerozoic←Earth formed←Earliest water←LUCA←Earliest fossils←LHB meteorites←Earliest oxygen←Pongola glaciation*←Atmospheric oxygen←Huronian glaciation*←Sexual reproduction←Earliest…