What do you think should be done with a placenta after it is delivered?

Why do you think the puppy litter was all dark-haired?

The body of water found at number 4 on the map above is 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