Answer:
well rock pocket mice vary in color from light to dark and are usually found where the color of the ecosystem matches their fur. darker mice are found on islands with darker rock and vice versa. mutations allow for different variations of skin pigment but through natural selection only mice that blend with their environment will survive because they are best fit for their environment "survival of the fittest. ex a white mouse on a dark island will be much easier to spot and kill because it stands out against the dark floor
