O air-filled cavities that secrete mucus to keep the nose moist and remove bacteria.
Stress makes you nervous almost and makes our heart go faster and your brain think??? it could give you a heart attack?? i wouldn't trust this lol
The answer is 15 people.
Explanation
You have 45 people and a rate of 33%. 33% is equalivant to 1/3 so you divide 45 by 3 and get 15 people.
B. cholesterol is a steroid
