About 87%
2/27/96 IS THE MOST IMPORTENT
1. Precambrian Era (earliest forms of life, such as bacteria and blue-green algae; later in the period, invertebrates such as jellyfish).2. Paleozoic Era (Pangaea; invertebrate life, such as trilobites, later in the era, followed by development of vertebrates, including fish; development of vertebrates, amphibians, and the beginnings of reptiles; development of simple plants, such as mosses and ferns)3. Mesozoic Era (Pangaea separates into continents; "Age of Reptiles"; dinosaurs, flowering plants, small mammals and birds)4. Cenozoic (Present Era) Ice Age; mammoths; gradual development of mammals, birds and other animals recognizable today; humans; flowering plants, forests, grasslands.)Edit:Actually the above answer can be disputed. The Precambrian is not considered an era, it is considered a supereon that is divided into three eons. Two of these eons are subdivided into a total of seven eras. Combine that with the three eras of the Phanerozoic Eon, and you have ten.So this question doesn't really make sense, considering there are actually ten eras.
It covered exactly 25% of the Earths surface.
The diameter of the earth at the equator is 12,756 kilometers. The earth slightly bulges at the equator slightly elongating the distance.
Most common change to the Earths surface from internal forces would most likely be earthquakes and volcano eruptions. External forces could be considered meteor strikes, or possibly the effects of gravity on the oceans ( Tides ) Global warming is also melting glaciers and causing a growth in arid regions. kapm
The Precambrian time
The Precambrian Time
precambrian era
The precambrian era lasted from roughly 4.57 Ga to 0.54 Ga before today, equalling about 88 % of Earth's history.
Earth forming from a mass of dust and gas :)
4 billon years i think
precambrian era, paleozoic era, mesozoics era, cenozoic era
30%
Most of Earth's history has occurred in the Precambrian Era, a time span of over 4 billion years.
That question cannot be answer as of yet.
85% of earths history and the earliest era that exists. bacteria mostly survived then and built up oxygen until a mass extinction.The. Era had many extinctions because of large variations in climate is what mesozoicor cenozoic or precambrian which one
oxygen