Ammonia is a colorless gas with a strong, pungent smell. It is made up of nitrogen and hydrogen, with the chemical formula NH₃. Ammonia is commonly found in nature, produced by the decomposition of organic matter. It is also used in various industries, such as agriculture, where it serves as a key ingredient in fertilizers to help plants grow. In addition to its agricultural uses, ammonia is important in cleaning products and refrigeration systems. It can effectively remove stains and odors, making it a popular choice for household cleaners. However, it is essential to handle ammonia with care, as it can be harmful in high concentrations.