Humans are protected from air pollution by
A) sneezing and coughing
B) mucus capturing small particles
C) nasal hairs filtering out large particles
D) tiny mucus-coated, hairlike structures called cilia
E) all of these answers

Question

Quizplus · Accepted Answer

All of the given choices provide protection against air pollution. Sneezing and coughing expel larger particles, while mucus and nasal hairs capture smaller particles. Cilia in the respiratory tract sweep away any remaining particles, preventing them from entering the lungs.

Humans Are Protected from Air Pollution by