Nitrogen-containing compounds are chemical substances that include nitrogen atoms in their molecular structure. These compounds play essential roles in various biological processes, such as the formation of amino acids and nucleic acids, which are vital for life. Common examples include ammonia, nitrates, and amino acids. In addition to their biological significance, nitrogen-containing compounds are also important in agriculture and industry. They are used in fertilizers to enhance plant growth and in the production of explosives and pharmaceuticals. Understanding these compounds is crucial for environmental science and chemistry.