Compare and contrast molds, casts, and trace fossils.

Mold is a fungus that makes, multicellular filaments.

While cast fossils is when an animal dies and forms a cast fossil.

Compare and contrast molds and casts. Molds, casts, petrified fossils, carbon films and trace fossils ... Mold is a hollow area in sediment in the shape of an organism and Cast a solid copy of an organism's shape formed when minerals seep into a hollow area.