Childeren are given vaccinations <span>to develop antibodies against various diseases.</span>
Alveoli small balloon-like structures which are responsible for the oxygen exchange in the lungs across the membranes. These are attached to the branches of the bronchial passages. These alveoli inflate and deflate with inhalation and exhalation. Answer is C.
Because most students get their nutrients from school food there needs to be an increase in the duality of these nutrients.
Answer: i agree!
Explanation: you r very wise, sir
