How many kg of plankton would be needed to produce a 2 kg base

Look at the photo of the leaf. which term best describes this leaf?

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

To be or not to be that is da question