The chemical element with the atomic number 6 is carbon. Carbon is a non-metal and is essential for life, forming the backbone of organic molecules including proteins, carbohydrates, lipids, and nucleic acids. It exists in various allotropes, such as graphite, diamond, and amorphous carbon. Carbon is unique in its ability to form stable bonds with many elements, allowing for the vast diversity of organic compounds. In addition to its biological significance, carbon is also a key player in environmental science, particularly in discussions around climate change and carbon cycling in ecosystems.