Acid rain can dissolve more soluble elements from the soil, like aluminum. The dissolved aluminum accumulates and can reach toxic levels as it enters local streams and wetlands. Acid rain also removes important nutrients from the soil such as calcium, potassium, and magnesium. The lack of nutrients can negatively affect the health of plants and animals. Furthermore, the combination of less calcium and more aluminum can make forests more prone to pests, disease, and injury from freezing and drought. A correct balance of these nutrients is necessary for forest health. The chemicals found in acid rain can also cause paint to peel on structures and stone statues to appear old and worn down, which reduces their value.
