The answer would be the first one
Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Answer:
Viscosity
Explanation:
Ive had this question on quizzes many times. And viscosity was the answer.
