Which of the following energy sources is expected to have the least growth in the next 20 years? a. hydroelectricity b. coal c. natural gas d. nonhydro renewables select the best answer from the choices provided

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