Why is it necessary for animals to have a circulatory system?
o to move blood
o to breathe
o to maintain homeostasis
o to exchange materials with its environment

Analyze the central conflict and its in a story to discover the theme. o resolution o protagonist antagonist character

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

Jason puts an apple on top of an ice pack in his lunch bag lunch time the temperature of the apple has decreased what happens to the molecules in the apple when the temperature of the apple decreases