In _________ the young are born in an extremely immature state and complete development in their mother's external pouch.
A) placental mammals
B) monotremes
C) marsupials
D) reptiles
E) rodents
Correct Answer:
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Q17: One possible test for classifying contemporary animals
Q18: The ordering of organisms into categories, such
Q19: The oldest fossils found to date are
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Q23: The rapid expansion of placental mammals after
Q24: The environmental setting to which a species
Q25: Continental drift
A)had no real impact on the
Q26: Vertebrates are subdivided into five classes.
Q27: All of the following are examples of
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