What causes objects to change their motion? * 1 a force
2 the mass of an object
3 the velocity of an object

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

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 type of plant is good for a bioassay and where can i buy it? i only have a month.