Wich of the following events separate geologic time into ears and periods
Biology · Middle School · Thu Feb 04 2021
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The events that separate geologic time into eras and periods are often significant changes in the Earth's geology, climate, or biological makeup. One of the most widely recognized among these events is a mass extinction, which marks the end point of one period and the beginning of another. Other events can include major mountain-building episodes (orogenies), significant climate shifts that lead to ice ages, or other geological events such as continental drift and the formation or breakup of supercontinents. Each era and period is characterized by a somewhat distinct set of fossils, rock formations, and geologic phenomena.