How are fossils formed?

Fossils are formed when organic material is buried under layers of sediment and preserved over millions of years. The process begins when plants, animals, or microorganisms are rapidly covered by mud, sand, or volcanic ash. Over time, minerals replace the organic material, creating a rock-like replica of the original structure. Fossils provide valuable insights into extinct species, ancient ecosystems, and Earth’s geological history. They are commonly found in sedimentary rock formations and are used by scientists to understand evolution and past climates.