The graph in Figure 3 represents the beak sizes of the offspring of the birds that survived the drought of1977. (The survivors were represented by the black bars in Figure 2, and this graph shows the...

The graph in Figure 3 represents the beak sizes of the offspring of the birds that survived the drought of1977. (The survivors were represented by the black bars in Figure 2, and this graph shows the beak depth distribution of their offspring in 1978.)

Explain the observed change in beak characteristics using the following concepts in your answer: competition, survival of the fittest, inheritance.

Extracted text: 1978 Offspring 30 10 7.3 7.8 8.3 8.8 9.3 9.8 10.3 10.8 11.3 Beak Depth (mm) 40 20 Number of Birds