Examlex
Perform the indicated operation. Write the result in the form a + bi.
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Paleozoic
An era in the geologic time scale, approximately 541 to 252 million years ago, marked by the early development of life, including the Cambrian explosion.
Geologic Timescale
A system of chronological measurement that relates stratigraphy to time, used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships between events that have occurred during Earth's history.
Precambrian Era
The Precambrian Era encompasses all of geological time prior to the Cambrian Period, covering approximately 88% of Earth's history and marked by the formation of the Earth and the appearance of early life.
Oldest Rocks
The earliest-formed rocks on Earth or within a specific geological setting, often found in the deepest layers of the Earth's crust.
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