Peppered moths collected from three different areas are shown. Rank the habitats the moths live in, from most sooty to least sooty.

Let’s look at how natural selection causes advantageous traits to become more common in populations. Suppose there is a population of bugs in which some individuals are green and some individuals are brown. Suppose that, because brown bugs are better camouflaged against predators, each brown bug leaves two brown offspring per generation (on average) and each green bug leaves one green offspring per generation (on average). (Is this natural selection? Why?) You start with two brown bugs and two green bugs in generation

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A C B