Trace the flow of blood from the right side of the heart and back to the same site. How is blood routed through the small
intestine? Which class of nutrients enters the body via the blood?
Via the lymph?

Describe some of the common health conditions associated with air pollution.

At what age does trust usually begin to develop? a. 25 weeks b. 20 weeks c. 15 weeks d. 10 weeks

How is health different for most people in this country today from what it was for people born in 1900? a. people have a shorter life span. b. people today work harder to survive. c. people today live in poorer sanitary conditions. d. people today can focus less on day-to-day survival and more quality of life.