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sar12

A population of hummingbirds is composed of individuals with short or long beaks, which they use to reach nectar inside flowers. A flowering trumpet vine that produces many deep, bell-shaped flowers is introduced to the region, resulting in fewer short-beaked and more long-beaked hummingbirds. Which of the following conditions most likely caused this shift in the hummingbird population?

  • one year ago
  • one year ago

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  1. sar12
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    a. Hummingbird predators avoided areas where the trumpet vine grew. b. Hummingbirds starved because the trumpet vine limited the food supply. c. Hummingbirds that compete for nectar were more successful with long beaks. d. Hummingbirds with short beaks overproduced offspring with longer beaks.

    • one year ago
  2. Sleepy12
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    c

    • one year ago
  3. nazima
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    do you have idea of natural selection?

    • one year ago
  4. sar12
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    no not really

    • one year ago
  5. nazima
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    survival of the fittest,

    • one year ago
  6. nazima
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    so see in that prospective.

    • one year ago
  7. sar12
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    ok

    • one year ago
  8. sar12
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    so b?

    • one year ago
  9. sar12
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    am i right?

    • one year ago
  10. nazima
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    natural selection is about competition between organisms which share common niche

    • one year ago
  11. sar12
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    d?

    • one year ago
  12. viendra
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    it is C.

    • one year ago
  13. sar12
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    really is that right?

    • one year ago
  14. nazima
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    ya c it is

    • one year ago
  15. sar12
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    oh ok thanks guys!

    • one year ago
  16. nazima
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    do u get it how? that is what is more important.

    • one year ago
  17. sar12
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    yea, from the beginning i thought so, but I thought it was wrong...

    • one year ago
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