Which of these correctly explains differences between steroids and enzymes

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

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 the carbon cycle involve an exchange of carbon