Answers A. a snake and a lizard

B. A tuna and a sparrow

C. A robin and a salamander

D. A frog and a salmon

The deserts of the sahara and australia are associated with

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

Darwin’s hypothesis about how life changes over time is now called?