These games cover the basic evidences for evolution from fossils to comparative cytology. A B Organic evolution the process of species changing over time Fossil Any trace or remains of an organism that has been preserved by natural processes. Amber A hard, yellow, transparent material formed by the hardening of tree resin, in which insects become trapped.
Ice Allows whole organisms to be preserved for thousands of years in cold Artic regions.
Under some conditions, the hard, mineral parts of animals such as shells, bones, and teeth can be preserved. The process by which the remains of an organism turn to stone by replacing original substances with minerals from the water in which the organism dies. When the remains of an organism decay, but the shape is preserved in the rock as a hollow form. Cast When a mold fills with minerals and hardens into rock in the form of the original organism. The study of structural similarities and differences among living things which may show an evolutionary relationship.