You wish to test whether an experimental manipulation that mimics industrial melanism could cause changes to moth coloring.You create a large controlled environment that includes moths, their predators, and trees.You first observe moth coloring over a few generations, and then you

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The experimental manipulation that mimics industrial melanism involves darkening of tree trunks in response to pollution. Therefore, darkening the tree trunks is the best choice for testing the effect of this manipulation on moth coloring. Increasing the number of predators or introducing new prey may affect moth survival, but will not necessarily impact their coloring. Removing sunlight may also affect moth behavior and survival, but will not specifically test the effects of industrial melanism.

You Wish to Test Whether an Experimental Manipulation That Mimics