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Bird Beak Variation Bird beak size is often related to the type of food the bird eats and the size of the food source. Some birds eat seeds as food. Birds with large beaks are better able to eat larger seeds, while birds with small beaks typically eat smaller seeds. An environmental change occurred that resulted in a reduction in one type of food, namely small seeds. The change caused a shift in the distribution of beak sizes observed. The graph shows the distribution of birds of various beak sizes before and after the change. original population. Percentage of Population Small population after environmental change Medium Beak Size Large Which statement BEST describes what happened to the birds with smaller beaks? B. O C. O D The environment selected for them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected for them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population. The environment selected against them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected against them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population.

Bird Beak Variation Bird beak size is often related to the type of food the bird eats and the size of the food source. Some birds eat seeds as food. Birds with large beaks are better able to eat larger seeds, while birds with small beaks typically eat smaller seeds. An environmental change occurred that resulted in a reduction in one type of food, namely small seeds. The change caused a shift in the distribution of beak sizes observed. The graph shows the distribution of birds of various beak sizes before and after the change. original population. Percentage of Population Small population after environmental change Medium Beak Size Large Which statement BEST describes what happened to the birds with smaller beaks? B. O C. O D The environment selected for them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected for them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population. The environment selected against them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected against them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population.

Concepts of Biology
Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter19: Population And Community Ecology
Section: Chapter Questions
Problem 2ACQ: Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the...
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Bird Beak Variation Bird beak size is often related to the type of food the bird eats and the size of the food source. Some birds eat seeds as food. Birds with large beaks are better able to eat larger seeds, while birds with small beaks typically eat smaller seeds. An environmental change occurred that resulted in a reduction in one type of food, namely small seeds. The change caused a shift in the distribution of beak sizes observed. The graph shows the distribution of birds of various beak sizes before and after the change. original population Percentage of Population Small population after environmental change Medium Beak Size Large Which statement BEST describes what happened to the birds with smaller beaks? O D The environment selected for them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected for them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population. The environment selected against them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected against them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population.
Transcribed Image Text:Bird Beak Variation Bird beak size is often related to the type of food the bird eats and the size of the food source. Some birds eat seeds as food. Birds with large beaks are better able to eat larger seeds, while birds with small beaks typically eat smaller seeds. An environmental change occurred that resulted in a reduction in one type of food, namely small seeds. The change caused a shift in the distribution of beak sizes observed. The graph shows the distribution of birds of various beak sizes before and after the change. original population Percentage of Population Small population after environmental change Medium Beak Size Large Which statement BEST describes what happened to the birds with smaller beaks? O D The environment selected for them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected for them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population. The environment selected against them, increasing the competition for small seeds and reducing the number of birds with small beaks in the population. The environment selected against them, decreasing the competition for small seeds and increasing the number of birds with small beaks in the population.
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