What does groundwater naturally contain that allows it to dissolve limestone and form caverns?

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

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

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?