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The history of the planet.
A record of the geologic events and life forms the earth's history.

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13y ago

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What is geologic eras?

Cenozoic Era


How is the geologic time scale related to the theory of evolution?

The geologic time scale provides a framework for understanding the timing of events in Earth's history, including when different life forms existed. This temporal context is crucial for studying evolution because it allows scientists to track the emergence and diversification of species over millions of years. By correlating the geologic time scale with the fossil record, researchers can infer evolutionary relationships and patterns of biological change.


What division in the geologic time scale is the shortest?

The shortest division in the geologic time scale is an Epoch. Epochs are subdivisions of a period and are typically tens of millions of years long.


What is The largest expanse of time on the geologic time scale is the?

The largest expanse of time on the geologic time scale is the eon, which is further divided into eras. Eons are the longest subdivisions of time, representing billions of years of Earth's history.


Why can it be difficult to assign dates to the divisions of the geologic time scale?

Assigning dates to divisions of the geologic time scale can be difficult because different rock layers and fossils may not be found in all locations, making correlation between different areas challenging. Additionally, the accuracy of dating methods can vary depending on the type of material being dated. Lastly, changes in Earth's environment and processes over time can complicate the interpretation of the geologic record.