Old tombstones that can no longer be easily read are an example of weathering?

Yes, old tombstones that are difficult to read are indeed an example of weathering. Over time, natural elements such as rain, wind, and temperature changes can erode the stone, causing inscriptions to fade or become obscured. This process illustrates how environmental factors can physically alter materials, leading to the degradation of man-made structures. As a result, weathering not only affects the appearance of tombstones but also impacts the preservation of historical information.