What is the smallest size category of soil a. sand b. clay c. gravel d. silt

What are two reasons for why a species might disappear from the fossil record?

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

This is the process of making a prediction based on the results of prior observations of similar events.