Question

A mold fossil is

Answer 1

a fossil that is formed when an organism dies and is buried in sediment. Over time, the organic material of the organism decomposes, leaving behind a cavity in the shape of the organism. This cavity is called a mold fossil. Mold fossils can preserve the external features of the organism, such as the shape and texture, but not the internal structures. They can provide valuable information about the shape and size of extinct organisms and can help scientists understand the evolutionary history of life on Earth. Mold fossils are often filled with sediment or minerals, which can later harden to become a solid fossil called a cast fossil.