Smoke and lungs
Smoking and Your Lungs. Human Respiratory System The human respiratory system consists of nasal passages, pharynx. larynx, trachea, bronchi, bronchioles,
12/4/14 What are some reasons why people may start smoking? ¿Qué es algunas razones por qué personas fuman cigarrillos?
The Dangers of Tobacco. What is Tobacco? Tobacco is a plant that contains nicotine. Its leaves are dried and then made into cigarettes, cigars, smokeless.
