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

mesozoic

cenozoic

precambrian

paleozoic

According to the geological time span, the era which covers major history of the Earth is considered to be Precambrian era.

Option 3

Explanation:

Precambrian era is considered to be the most covering history of the Earth based on two factors, one is that it is longest era according to the geological time scale.

And as it is the longest era, major historical events of Earth are witnessed during this time. Precambrian era is known to be the beginning of formation of Earth which was about 4.5 billion years ago and it lasted for 542 million years ago.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.