Question

different finch species have beaks of different shapes and sizes. these different beak structures are evidence of ______. individual birds changing their beak characteristics so that they could feed efficiently. different finch species adapting to different environments over many generations. rewatch

Explanation:

The first option is incorrect because individual birds can't change their beak characteristics during their lifetime in a way that's inherited (this is a Lamarckian view, which is not supported). The second option is correct as different finch species' beak structures are adaptations that occur over many generations as they adapt to different environmental conditions (like different food sources in different habitats), which is consistent with natural selection and evolution.

Answer:

B. different finch species adapting to different environments over many generations.