Where does gas exchange occur in the respiratory system?
a. bronchi
b. trachea
c. epiglottis
d. alveoli

3paragraph about medical terminology

Which of the following identifies the main culprit for america’s increasing weight gain?

Andra has a family history of osteoporosis. her doctor advises her to eat foods rich in calcium. which foods should she add to her diet? a. fruits, especially grapes and berries b. unsaturated fats like olive and soybean oil c. beet greens, broccoli, and cheese