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MMLU / During the late Miocene, carbon isotope analysis indicates environmental changes…

Problem

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question

During the late Miocene, carbon isotope analysis indicates environmental changes that would have impacted the hominid ancestors of modern humans. These changes are best characterized as:

choices

  1. a sudden drop in global temperatures resulting in a return to ice age conditions.
  2. a sudden rise in global temperatures resulting in rising sea levels.
  3. an expansion of grasslands and reduction in woodlands, resulting in regional mosaic environments.
  4. a decline in large mammal populations and relative increase in other classes of vertebrate species.

subject

prehistory

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Source and history

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