The earliest fossils have been found from the __________ Eon.
A) Proterozoic
B) Phanerozoic
C) Hadean
D) Archean
Correct Answer:
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Q31: In a _, the sedimentary layers above
Q32: Scientists have noted that mass extinctions have
Q33: Fish, amphibians, and reptiles all evolved during
Q34: An unconformity in which tectonic activity tilted
Q35: The principle of faunal succession states that:
A)
Q37: Scientists have determined the Earth's age to
Q38: The principle of original horizontality is based
Q39: Humans evolved during the _ Era/Eon.
A) Cenozoic
B)
Q40: The smallest unit of geologic time is
Q41: In a disconformity, older sedimentary beds were
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