What depth range does the thermocline span?

What is the difference between an igneous, sedimentary and metamorphic rock

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

How does photosynthesis show the conservation of mass and energy?