Answer:
move air towards the lungs and warm, moisten, filter
Explanation:
the upper respiratory system incldues your mouth, nose, trachea, and a portion of your lungs
C is the correct answer to this
Answer:
C. by causing mutations in genes
Explanation:
Smoke can induce mutations in genes causing tumors such as lung cancer
Elevated white blood cells may signify an infection (inflammatory process) or cancer of blood cells (leukemia)