Iron is the natural element known for causing rust. When iron comes into contact with oxygen and moisture, a chemical reaction occurs that leads to the formation of iron oxide, commonly known as rust. This process is accelerated in humid environments, where water vapors facilitate oxidation. Rust can weaken structures made of iron and lead to deterioration if not properly managed. Prevention methods include painting, galvanization, and regular maintenance to minimize exposure to moisture and air. Rusting is an important consideration in various industries, particularly in construction and manufacturing, where iron and steel are commonly used.