On the geologic time scale, life originated in the _____.
Introduction: Geological time scale is the total life span on the Earth from its origin. It is also called as the calendar of the Earth, as it explains the relationships and timing of events that have taken place during the Earth's history. It can relate the rock layers with the time interval. The events are mainly classified into eons, eras, periods, and epoch. The eras are mainly divided into 4- Cenozoic, Mesozoic, Paleozoic, and Archean.