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Which sequence shows the correct order of Earth's geologic time intervals from oldest to youngest?
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
Which choice lists the units of geologic time in order from largest time unit to smallest?
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
What event usually marks the end of one era and the beginning of another?
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
Which epoch is associated with the Last Ice Age to occur in NYS?
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
A good index fossil must be...
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
The Geologic Time Scale has been subdivided into a number of time units called periods on the basis of
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
Geologists estimate the time of Earth's origin and the entire solar system to be
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
Index fossils are important to studying geologic time because
Pleistocene
a mass extinction
Archean, Proterozoic, Paleozoic, Mesozoic, Cenozoic
They mark a specific moment in geologic history.
Eon, Era, Period, Epoch
4.6 billion years ago
Found everywhere in a short amount of time.
fossil evidence
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