The element with the atomic symbol 'N' is nitrogen. Nitrogen is a colorless, odorless gas that makes up about 78% of the Earth's atmosphere by volume. It is essential for life, as it is a critical component of amino acids, proteins, and nucleic acids like DNA and RNA. Nitrogen is found in various compounds, including fertilizers, explosives, and refrigerants. Additionally, nitrogen plays a vital role in the nitrogen cycle, a natural process where nitrogen is converted and recycled in ecosystems. Its abundance and biochemical importance make nitrogen a key element in environmental science and agriculture.