Medicinal cannabis in pregnancy - panacea or noxious weed?

How are the cell walls of a plant and fungus different ?

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

What is any method of measuring the age of an object or event in years, such as using atomic half-life?