15.Which is the main purpose of the digestive system? A. to add oxygen to food particles
B. to fill the stomach with food particles
C. to turn food into nutrients the body needs
D. to transfer food from one organ to another organ

According to the article, when our sleep/wake cycle breaks down, we are at an increased risk for all but which select one: a. respiratory illnesses b. dementia c. diabetes d. heart disease

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

What is the main goal of recommended dietary allowances (rdas)? to inspect school cafeterias across the united states to regulate foods sold at supermarkets and farmers' markets to investigate claims of tainted food being served in restaurants to indicate daily nutrient requirements