Which of the following is a characteristic of all angiosperm ? a. complete reliance on wind as a pollinating agent, b. double internal fertiliaztion. c. free-living gametophytes

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

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

Which statement describes the punctuated equilibrium theory?