What can happen to the soil after the mice have destroyed the roots of the grass?

 The prairie meadow mice are large eaters, eating their own weight in greens every twenty-four hours. Usually they eat tender stems, leaves, roots, tubers, flowers, seeds, fruits or grasses,The meadow mice helped by cutting down the grass and by loosening the soil with their tunnels.By making tunnels, the mice also continuously mix wastes and their food stores with the soil. In this way the nutrients from the food they eat are quickly returned to the soil.