It seems that you have missed the necessary options for us to answer this question, but anyway, here is the answer. The statue of Leshan giant Buddha in Sichuan, China, is carved directly into the mountainside, and the <span>color and texture of the statue are constantly changing due to the pollutants from vehicles and industries nearby. The two main causes of the changes to the statue are RAINFALL AND CHEMICAL REACTION.</span>
One of the most poplar examples of commensalism is the relationship between cattle egrets and livestock. The cattle egret is a common species of heron that is found in most regions of the world, and is mostly seen moving along with herds of cattle. This bird moves about in pastures, and follows livestock such as cattle and horses.
D would be the correct answer