Each up-and-down column of elements on the periodic table.

A. Periodic Law

B. Group

C. Period

D. color of the chemical

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

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

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is