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According to the passage, which of the following best accounts for the apparent bias in antelope-migration direction?
  • AWarm-adapted antelope species are rarely able to tolerate cool habitats, whereas cold-adapted antelope species usually can tolerate warm habitats.
  • BDuring global warming periods, land bridges, when present, lack habitats suitable for sustaining warm-adapted antelope species.
  • CUnder most climatic conditions, Africa offers a larger number of suitable antelope habitats than does Eurasia.
  • DMany more species of antelope have originated in Eurasia than have originated in Africa.
  • E Land bridges are more likely to exist when climate change favors migration to warmer climates than when climate changes favors migration to cooler climates.

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