What is not a function of mucus in the nasal cavity?
a) to moisten air entering the respiratory system
b) to trap particles entering the respiratory system
c) to break down oxygen entering the respiratory system
d) to warm air entering the respiratory system

The 1.5 mile run test and the 12 minute swim test are considered as what kind of test ?

What are three important public health tools for addressing heart disease? identify the tools, and explain why they are a benefit to public health. you! : )

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?