At the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. What is most likely true regarding the brown mice before the greenhouse warming?     The brown mice population was large in number.     The brown mice population was small in number.     The fur color of mice changed to white because they needed to survive.     There were no brown mice born before greenhouse warming

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