The average number of individuals of the same species per unit of area or volume at a given time is the population's
O carrying capacity,
O birth rate.
O size.
Odensity.
O distribution.
Next >

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