10. How did Kettlewell test his hypothesis? 11. What were Dr. Kettlewell's conclusions after conducting his experiment? 12. Explain how the color of the moths increases or decreases their chances of survival. 13. In your own words, explain the concept of natural selection using your moths as an example. 14. Efforts to reduce pollution began occurring later in the century. If pollution near factories was reduced, what would happen to the color of the moths? Explain your answer.