Table A       Captured Peppered Moths

Reading     # Light Moths# Dark Moths
 

1 578 68
2 542 109

3 460 179

4 389 212

5 236 290

6 220 347

7 187 421

8 140 516

9 98 599

10 53 640
 

*Use the information from this chart to complete the line graph below.
 

Key your graph--using two colors--one to represent light moths captured, and the other to represent dark moths captured.
 

# of Moths

700

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0

0 1 2 3 4 5 6 7 8 9 10

Readings taken over time

1) How did the population change in the period covered?

2) Give two or more reasons that might explain the change.

3) Why was the dark moth in an advantageous position?

4) Explain why the change from light to dark color might be an example of natural selection and what caused it to appear.

5) What makes this pertinent evidence for Darwin to use in his theory?

6) In non-polluted areas, trees are covered with light colored lichen. Describe an experiment that would help a scientist determine which moth form adapted better to non-polluted areas.