In Which Animal Population Would Migration Be Least Effective or Necessary

question 259

Multiple Choice

In which animal population would migration be least effective or necessary as an adaptation for maintaining a population throughout the year?

• A) Salmon, which live in salt water, but breed in fresh water
• B) Blackbirds, which easily adapt to new food sources, regardless of weather
• C) Elephants on the African savanna, where there is a pronounced dry season
• D) Hummingbirds, who cannot survive in cold weather and migrate south in the winter
• E) Humpback whales in the Pacific Ocean, where seasonal food supplies vary by latitude

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