Asked by fernanda
What levels of geologic time are broken down into chunks of time based on climate?
periods and epochs
eons and eras
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GPT-5 mini
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Periods and epochs.
Explanation: The geologic time scale is hierarchical (eon > era > period > epoch > age). Periods and especially epochs are the smaller subdivisions most often defined by changes in climate and life (for example, the Pleistocene epoch is defined by repeated glaciations; the Holocene marks the post‑glacial warm interval). Eons and eras mark much larger, tectonic/biologic shifts rather than short climate cycles.
Explanation: The geologic time scale is hierarchical (eon > era > period > epoch > age). Periods and especially epochs are the smaller subdivisions most often defined by changes in climate and life (for example, the Pleistocene epoch is defined by repeated glaciations; the Holocene marks the post‑glacial warm interval). Eons and eras mark much larger, tectonic/biologic shifts rather than short climate cycles.
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