Question

the graphs above show the population size and distribution of beak sizes in a finch population on the island of daphne major in the galapagos in 1976 and 1978. smaller - beaked finches are better suited for eating grasses and small seeds. larger - beaked finches are better suited for cracking larger seeds and nuts. in 1977 a drought took place and the vegetation of the island was affected by the lack of rain.which of the following was the number of finches in the population with a beak size of 10.2 mm in 1978?a 8 b 12 c 40 d 65

Explanation:

Step1: Analyze the 1978 graph

Look at the "Distribution of Beak Size in a Population of Finches, 1978" graph.

Step2: Locate the 10.2 mm mark

Find the vertical line (dashed) at 10.2 mm on the "Beak Depth (mm)" axis.

Step3: Sum the number of finches

Count and sum the number of finches (on the "Number of Finches" axis) corresponding to the bars at or around 10.2 mm. After counting, we can see that the total number is 40.

Answer:

C. 40