Fossilization is the process by which organisms or objects become preserved in the earth's crust as fossils. This typically occurs when the remains of plants, animals, or other organisms are buried in sediment or other material that hardens over time, creating a fossil. Fossilization provides valuable information about the history of life on Earth, including details about ancient ecosystems, evolutionary relationships, and past environmental conditions. Researchers in the field of fossilization study how organisms are preserved, the factors that contribute to their preservation, and the methods used to extract and analyze fossil remains. Overall, fossilization research provides important insights into the biodiversity and evolution of life on our planet.