Before the appearance of cells capable of sexual reproduction, ____.
A) there was no life on Earth
B) evolution was comparatively slow
C) evolution was comparatively fast
D) cells could not reproduce
E) multicelled organisms existed
Correct Answer:
Verified
Q19: Modern eukaryotic cells that contain organelles and
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Q21: _ sequences provide evidence for convergent plate
Q22: The oldest eukaryotes in the fossil record
Q23: The increase in atmospheric oxygen during the
Q25: The Archean atmosphere can best be described
Q26: What term describes molecules that are intermediate
Q27: About one-fourth of modern day chrome reserves
Q28: By _ years ago, much of Greenland,
Q29: Besides iron, banded iron formations contain
A)quartz
B)calcite
C)magnetite
D)chert
E)shale
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