Which is not a function of mucus in the nasal cavity

Write a paragraph about why the respiratory system is important and we need to breathe easily. (guys i really need ) x(

Heat affects all vitamins. which vitamins are more sensitive to heat and leach into water? a. vitamin a and d b. vitamin b and c c. vitamin e and k d. vitamin d and c

Although the percentage of teens smoking has gone done in recent years, the number is still approximately percent. question 15 options: 10 30 40 20