Most of the conducting passageways of the respiratory tract are lined with pseudostratified ciliated columnar epithelium. The nasal mucosa, a portion of the respiratory mucosa, warms, humidifies and purifies the incoming air. Which features of the nasal mucosa is most closely associated with the function of warming the incoming air?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Variety of living organisms; includes genetic, species, and ecological types.

What organ systems are working to you cool down after a workout?