Acid rain is produced by volcanic eruptions. Acid rain has been shown to have adverse impacts on forests, freshwaters and soils, killing insect and aquatic life-forms, causing paint to peel, corrosion of steel structures such as bridges, and weathering of stone buildings and statues as well as having impacts on human health. "Acid rain" is a popular term referring to the deposition of a mixture from wet (rain, snow, sleet, fog, cloudwater, and dew) and dry (acidifying particles and gases) acidic components. Distilled water, once carbon dioxide is removed, has a neutral pH of 7. Liquids with a pH less than 7
Milk-alkali syndrome most gastric ulcers was identified and drugs other than antacids were developed to treat heartburn - namely acid-reducing drugs like H2-receptor antagonists or proton pump inhibitors - the incidence of milk-alkali syndrome greatly diminished. However, as a result of increased osteoporosis awareness and the routine use of calcium supplements to prevent it, the incidence has again increased. Milk-alkali syndrome In medicine, milk-alkali syndrome is characterized by high blood calcium and metabolic alkalosis caused by taking in too much calcium and absorbable alkali; common sources of calcium and alkali are dietary supplements taken to prevent osteoporosis and antacids. If untreated, milk-alkali