This document outlines four key types of evidence that support the theory of evolution: fossils, comparative anatomy, embryology, and biochemistry. Fossils provide evidence of extinction, transitional forms between species, and changes in life forms over time. Comparative anatomy reveals homologous and vestigial structures that indicate common descent. Embryological development shows similarities across taxa. Biochemical similarities in proteins, DNA, and other molecules also support the theory that organisms share a common ancestry.