Which era makes up the vast majority of Earth's history?A.MesozoicB.PrecambrianC.CenozoicD.Palezoic

The era that makes up the vast majority of Earth's history is B. Precambrian.

Here's a step-by-step explanation:

1. The Earth's history is divided into several geological time periods, which are usually referred to as "eras". These eras are defined by significant events or changes in the Earth's biosphere, such as mass extinctions or significant evolutionary advancements.

2. The four options given are all eras within Earth's history. The Mesozoic is known for the time when dinosaurs roamed the Earth. The Paleozoic is known for the development of most of the major animal phyla and the first appearance of land plants and animals. The Cenozoic is the era we're currently in, and it's known for the rise of mammals.

3. The Precambrian, however, is the longest of these eras. It spans from the formation of Earth around 4.6 billion years ago to the start of the Cambrian Period about 541 million years ago. This means it makes up almost 90% of Earth's history, making it the era that makes up the vast majority of Earth's history.