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Different finch species have beaks of different shapes and sizes. These different beak structures are evidence of:

A. different finch species with different beak structures coming to the Galapagos Islands from the mainland.
B. different finch species adapting to different environments over many generations.
C. individual birds changing their beak characteristics so that they could feed efficiently.
D. different finch populations being evolutionarily related.

Answer :

Final answer:

The distinct beak shapes in different finch species reflect their long-term adaptation to various habitats, emphasizing the influence of environment-driven natural selection on shaping these evolutionary traits.

The correct answer is b. different finch species adapting to different environments over many generations.

Explanation:

The diverse beak structures among different finch species are a result of their adaptation to distinct environments over numerous generations. This phenomenon is a classic example of natural selection, where finches with advantageous beak shapes for specific food sources thrive and pass on their traits to offspring. For instance, finches with longer, pointed beaks are better equipped to reach insects, while those with thicker, stronger beaks can crack open tough seeds.

This variation in beak morphology directly relates to the availability of food resources on their respective islands. Over time, these adaptations accumulate, leading to the development of various beak shapes within different finch populations. This evidence highlights the significant role of natural selection and environmental pressures in shaping the diversity of life forms.

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