Ammonia is an inorganic compound composed of a single nitrogen atom covalently bonded to three hydrogen atoms that is an amidase inhibitor and neurotoxin. It is both manufactured and produced naturally from bacterial processes and the breakdown of organic matter. Ammonia is nitrogen and hydrogen with the formula of NH3 and this is important because they are preferred nitrogen containing nutrients for plant growth, and this is produced by industry which is used in agriculture as a fertilizer. Ammonia has been found in air, soil, and water, ammonia is the simplest stable compound of these elements and serves as a starting material for the production of many commercially important nitrogen compounds. This is very soluble in water and can be condensed to liquid by cold and pressure. Ammonia is very useful in our life.