Afamily has two male children. one brother has a straight thumb, while the other brother has a bent thumb. what causes this difference?

How will technology impact medicine in the future?

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

What are some natural processes that represent physical and chemical changes?