As trees were burned in the fire what is most likely released into the atmosphere

Which sequence correctly shows the path of carbon dioxide during repiration?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

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