Jon and Sara are listing ways they can help the environment. Which item on their list is incorrect? 1. Carpool or ride bikes more
2. Recycle batteries and old phones
3. Only fill cars with gas when the tank is more than half empty
4. Use reusable grocery bags when shopping

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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