Now, go back to figure 1 (basically the grandparents) and compare:
11. What is the approximate number of birds now in 1978 compared to 1976? _
12. What is the common beak depth now in 1978 compared to 1976? _
Now, go back to Figure 2 (their parents) and compare:
13. What is the approximate number of birds now in 1978 compared to 1977 (Dark Bars in figure 2)? _
14. What is the common beak depth now in 1978 compared to 1977 (dark bars in figure 2)? _
15. What is the range of beak depths now in 1978 compared to 1977? _
16. Explain the observed change in beak characteristics because of natural selection: *USE VIDA
Answers: 3
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Now, go back to figure 1 (basically the grandparents) and compare:
11. What is the approximate num...
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