Section Formative Assessment Reviewing Main Ideas
1. Describe three differences between developing
and developed nations using the examples
in Figure 24. Would you classily Mexico as a
developing nation? Explain your answer

The transport tubes from food came down the plant are called?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

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