Researchers have historically considered the human appendix to be a vestigial structure. what evidence, if true, would best disprove this claim? a. the appendix was used to digest leaves in the ancestors of humans, but it appears to serve no function in modern humans. b. cows have an appendix to them digest grass, but it evolved independently from the appendix found in humans. c. the human appendix to maintain the health of the gut, and arose fairly late in the evolutionary history of mammals. d. chimpanzees also have an appendix, and humans and chimpanzees inherited the appendix from the same ancestor.

The correct answer is C) The human appendix helps to maintain the health of the gut, and arose fairly late in the evolutionary history of mammals.

Vestigial organs are those organs that have lost all or most of their functions. One of its example is appendix. Some researchers think that the appendix in humans was used to digest cellulose( present in plant). Some scientist believe that modern human appendix play role as a house for digestion-aiding bacteria.

italy's population growth rate is almost at zero, the national statistics agency, istat, said on monday, mainly due to a dwindling birth rate.

i believe it would be the lungs.