Question

What main criterion determines major divisions in the geologic time scale?(1 point)
Responses

different stages in human evolution
different stages in human evolution

the occurrence of huge events in Earth's natural history
the occurrence of huge events in Earth's natural history

times of major climate change
times of major climate change

shifts in the position of Earth in its orbit

Answer 1

The main criterion that determines major divisions in the geologic time scale is **the occurrence of huge events in Earth's natural history**.