The Cambrian explosion occurred primarily in the oceans.The first challenges that had to be overcome during the mass colonization of dry land in the Ordovician period were
A) support of body structure without buoyancy in water, movement, and reproduction.
B) photosynthesis, cellular respiration, and reproduction.
C) DNA replication, photosynthesis, and cellular respiration.
D) DNA replication, phagocytosis, and cellular respiration.
Correct Answer:
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Q11: The following numbered sets each represent a
Q12: The Cambrian explosion resulted in the evolution
Q13: Monotremes,like the duck-billed platypus,are egg-laying mammals covered
Q14: If a plant evolved during the Permian
Q15: Which kind of organism makes up the
Q17: During the Devonian period,plants evolved which of
Q18: In the evolutionary tree below,which of the
Q20: The Cambrian explosion _.
A) caused a lack
Q20: The _ feature occurs between each branch
Q21: Which of the following statements about bird
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