How long is the average person's toes, asking for a friend? ;)

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

Ture or false evidence for evolution includes millions of fossils

Which feature would you expect to find in a population in which sexual selection depends on male competition?