Question

The geological time scale is divided up and organized according to what life forms existed on earth.

Answer 1

True, though the Hadean period is one exception.

Answer 2

The given statement is True.

The geological time scales are divided into epochs and the era. The geological timelines are divided into many division depending on the condition of life and the organism, which existed at that particular time period. There is one exception Hadean period, this is not actually a geological time, in this period, the formation of the solar system occurred, and no life form existed.