13. what is an entomologist?

14. how do scientists test theories?

15. write down one of kettlewell's predictions.

16. dark moths were found in what parts of the country?

17. how did kettlewell directly study the moths?

18. why did dark moths have a survival advantage?

19. when kettlewell recaptured the marked moths, what did he find?

20. where did kettlewell publish his findings?

13. An entomologist is a person who studies in the branch of zoology having to do with insects.

14. They first make hypothesis, then they test their predictions, leading them to make conclusions.

15. Clean forests would most likely contain white moths.

16. They were found in industrial areas that made pollution.

17. He placed both colored moths on tree trunks and recorded the times it took for the bird to find the moths

18. They blended in with the tree trunks unlike the light colored moths didn't.

19. There were more light colored moths in clean forests and dark colored moths in dark forests.

20. Scientific American

The answer is a because - is an direction