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The Eon. We are currently in the 4th Eon.
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∙ 12y ago
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What is the longest time period in the history of earth?
Geological time spans are broken down in different ways depending on the system used. See the link below.
A record of events in earth history?
geologic time scale
Is nearly 90 percent of Earth's history?
precambrian time
What is the timeline for earth's history called?
Prehistoric time line
Between what years was the largest expansion in russian history?
The largest expansion in Russian history took place between the years of 1500 and 1800. During this time, Russia expanded from the Black Sea to the Oka River.
Which time scale divided the history of the earth into eras periods and epochs?
The geological time scale is the history of the earth. This is in the eras period and epochs.
What was the longest segment of the earth's history?
It was the Precambrian time period.
Is the Precambrian time the longest or shortest part of Earth's history?
The Precambrian time period is the longest time period of Earth's history.Looks like we have the same worksheet in school :)
Which block of geologic time spans the largest percentage of Earth's history?
Precambrian
Which time segment represents the longest time of earth's history?
Pre-Cambrian Time Period
What is a measurement of the earth history divided into time period?
fossil record geologic time scale
What is a measurement of the Earth's history divided into time period?
fossil record geologic time scale
What time period lasted for more than half of the hypothesized history of the earth?
paleozoic
How many years of history do earth scientists study?
Geologic time covers the period from the formation of the Earth to the present, a period of roughly 4.6 billion years.
What is the period of time before history?
There wasn't one. History started with what happened first. From when the first living thing was on Earth. History is how our planet was made. Everything you do is history.
What does it mean when fossils have been called the index to earth history?
viusualize it back from it;s time period
What is Permian?
The Permian was the last period of the Paleozoic Era, spanning 299-351 million years ago. It was a time during which reptiles diversified. It ended with the Permian-Triassic extinction event, the largest mass extinction in Earth's history.
