Earth was formed somehwat less than 4.6 billion years ago. The Cambrian Era begins around 542 million years ago. Subtracting these times provides for a PreCambrian Era of around 4 billion years in length.
This time period makes up around 87% of Earth's total history.
The Precambrian Super-Eon lasted from 4,576.2 until 542 million years ago approximately 4.0422 billion years.
About 90% of the earths history.
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
4.6 billion years
Considering all geologic time before 543 million years ago as the Precambrian Era, there are four total. The other three are the Paleozoic, Mesozoic, and Cenozoic.
They are about 25.6 light years apart in the earths sky.
Every year it move but it so little it takes many years to notice a difference.
from about 4.6 billion to 543 millions years ago
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
4.6 billion years
The Precambrian Super-Eon lasted from 4,576.2 until 542 million years ago approximately 4.0422 billion years.
Began 5 billion years ago
Considering all geologic time before 543 million years ago as the Precambrian Era, there are four total. The other three are the Paleozoic, Mesozoic, and Cenozoic.
There is not many remains of the Precambrian time
The Precambrian is a long period and just as Earth has many climates now, it had many then.
4.6 billion years
250,000 years
simple answer 6
The Precambrian interval of earth history is difficult to study because of its tremendous age. Many of the original rocks have been destroyed by weathering and erosion, or have been greatly altered by heat & pressure during burial, a process known as metamorphism.