Describe and name 2 types of mechanical weathering

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

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 best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome