The oldest well-documented stromatolites occur in the ____.
A) Hadean
B) Archean
C) Paleoproterozoic
D) Mesoproterozoic
E) Neoproterozoic
Correct Answer:
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Q4: Earth differentiated during the _.
A)Hadean
B)Archean
C)Paleoproterozoic
D)Mesoproterozoic
E)Neoproterozoic
Q5: Organisms are composed of simple monomers.
Q6: Time divisions in the Precambrian are based
Q7: During the Archean, how long was the
Q8: The prevailing model for the formation of
Q10: The exposed part of the North American
Q11: All known Proterozoic animals were soft-bodied.
Q12: Stromatolites are the product of organic activity.
Q13: Sandstone-carbonate-shale assemblages occur along continental rift margins
Q14: Granite-gneiss complexes are typical in what age
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