Vitamin B12 could trigger outbreaks of acne, scientists have today warned. The essential nutrient, found in meat, fish, eggs and dairy products, as well as in Marmite, alters the activity skin bacteria. This leads to unsightly spots and pimples in susceptible people, a new study found.
Sulfur dioxide, SO2, is a colorless gas or liquid with a strong, choking odor. It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores (aluminum, copper, zinc, lead, and iron) that contain sulfur. Sulfur dioxide dissolves easily in water to form sulfuric acid. Sulfuric acid is a major component of acid rain. Acid rain can damage forests and crops, change the acidity of soils, and make lakes and streams acidic and unsuitable for fish.
Most of the sulfur that is produced is used in the manufacture of sulfuric acid (H 2 SO 4). Large amounts of sulfuric acid, nearly 40 million tons, are used each year to make fertilizers, lead-acid batteries, and in many industrial processes.ydrogen sulfide (H 2 S) is a gas that smells like rotten eggs. Sulfur dioxide (SO 2), formed by burning sulfur in air, is used as a bleaching agent, solvent, disinfectant and as a refrigerant.