Question

in the case of the peppered moths in england, when kettlewell set up cameras to document that more white or black moths were eaten by birds on clean or sooty trees, he was verifying which factor involved in evolution by natural selection?
multiple choice
the organisms vary in traits and that these traits may be acquired during a lifetime.
some individuals are better adapted to a particular environment than other individuals.
more young are born than can survive, so there will always be competition.
the variation is inherited.

Explanation:

Kettlewell's experiment showed that white moths were more easily eaten on sooty trees and black moths on clean trees. This indicates that some moths (either white or black depending on the tree - type) were better adapted to their environment. Natural selection acts on the traits that make individuals more or less adapted to their surroundings.

Answer:

Some individuals are better adapted to a particular environment.