Read the passage below and then answer the following questions.
Addiction to nicotine can happen quickly. Researchers found that 25% of teenage smokers reported feeling addicted within 30 days of having their first cigarette. One in ten of the teenagers reported feeling addicted within only two days of smoking their first cigarette. Nicotine is the chemical in tobacco that causes people to become addicted to tobacco products. Nicotine dependence is one of the most common and powerful types of chemical dependence.