Rain is more acidic than it used to be, that is why the marble statues and buildings weather quicker than before. The pH of rainwater furthered away from its normal pH value. According to www3.epa.gov, it states, “Normal, clean rain has a pH value of 5.0 and 5.5, which is slightly acidic.” Over the years, the rain became more acidic due to the constant recycling of water. The website also states that automobiles produce sulfur dioxide making the rain more acidic. Therefore, the reason why the marble statues and buildings are eroding quicker is because of the acidic rain
