Jan Baptista van Helmont performed an experiment for which he grew a willow tree in a pot for several years, during which time he kept an exact record of changes in the weight of the soil. At the end of his experiment, van Helmont concluded that the main source of the tree's biomass was .

You see a white marker with an orange circle and black lettering. what does this marker tell you

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 happens during the experiment stage of the scientific method