The smallest units of geologic time are the
A) eons.
B) periods.
C) eras.
D) epochs.
Correct Answer:
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Q15: Breaks, or gaps, in the rock record
Q16: The oldest evidence of life on Earth
Q17: Sedimentary layer A is found above sedimentary
Q18: Eons are divided first into
A) eras.
B) periods.
C)
Q19: Which of the following is not a
Q21: A group of periods is called a(n)
A)
Q22: The Paleozoic is a(n)
A) epoch.
B) era.
C) eon.
D)
Q23: The Phanerozoic is a(n)
A) epoch.
B) era.
C) eon.
D)
Q24: The Pleistocene is a(n)
A) epoch.
B) era.
C) eon.
D)
Q25: The Quarternary is a(n)
A) epoch.
B) era.
C) eon.
D)
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