What is not a function of mucus in the nasal cavity?

a. to warm air entering the respiratory system

b. to break down oxygen entering the respiratory system

c. to moisten air entering the respiratory system

d. to trap particles entering the respiratory system

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.

Which of these pieces of safety equipment should be worn when operating a chainsaw

How you feel when someone is boastful and self absorbed when providing you a professional service? why?