Carbon is uniquely suited to form the backbone of organic molecules due to its ability to form four covalent bonds with a variety of atoms, including other carbon atoms. This tetravalence allows carbon to create complex and diverse structures ranging from simple chains to intricate three-dimensional networks. Moreover, carbon-carbon bonds are particularly stable, which provides the durability necessary for the construction of large biomolecules essential for life, such as proteins, nucleic acids, and carbohydrates.