Which geologic time span covers the majority of Earth’s history?

Question

Precambrian

Paleozoic

Cenozoic

Mesozoic

Answer 1

The geologic time span that covers the majority of Earth's history is the Precambrian. The Precambrian encompasses the time from the formation of the Earth, about 4.6 billion years ago, until the beginning of the Cambrian period, around 541 million years ago. This means it accounts for about 88% of Earth's geological history.