What levels of organization of the global biosphere are impacted by the activity of the American Bullfrog.

What are genotypes? what are phenotypes?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

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