The period between the time when life first evolved on Earth and the definitive appearance of multicellular life was about _______ years.
A) 200 million
B) 500 million
C) 1 billion
D) 3 billion
E) 5 billion
Correct Answer:
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Q65: In undisturbed sedimentary rock, strata from which
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Q67: The current geological period is the
A) Tertiary.
B)
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Q69: During the Cenozoic, _ experienced major radiations.
A)
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Q72: Which period did not end with mass
Q73: The Cambrian explosion started _ the Cambrian
Q74: Which of the following is not considered
Q75: Coal is the fossilized remains of _
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