Relationship among sex linked inheritance ,sex limited inheritance and sex influence inheritance

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

Where does the information about where each transcription factor binds originate?

How are fossils used to date organisms?