Which one is the answer

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Is there any solid scientific evidence that humans have been cloned?