The appendix serves no essential purpose in human anatomy. It could therefore easily be argued to be an evolutionary remnant of some earlier form that did have an essential function.
However, arguments based on function are, at least to my mind, spurious at best. Much more significant are observations about the shapes of organs.
Morphological evidence.Genetic and genomic evidence.Geographical evidence.
No, Charles Darwin did not retract his ideas of evolution. His theory of evolution by natural selection remains a cornerstone of modern biology and is supported by extensive scientific evidence.
lalalalal
of fat lady
No, of course not. Evidence does not prove evolution - it validates the theory.Evidence which Darwin had included limited fossils, and observed apparent speciation in birds.