23. THe exchange of gases occurs in the
A. lungs B. nose
C. diaphragm D. Alveoli
24. COVID 19 attacks the lungs that causes Pneumonia, which part of the
Respiratory organ do we need to constantly cover to avoid being infected?
A. Lungs B. throat
C. nose D. mouth
25. Why do we need to keep our respiratory system healthy
A. to avoid getting sick
B. To prevent us contacting COVID 19
C. To continuously supply the body the oxygen that we need
D. all the answers above are correct.​