Lung Cancer
Lung cancer is the leading cause of cancer death in the U.S.
The minimum age to lawfully purchase tobacco varies by state.
Some people would like to increase the smoking age to 21 in all states.
Describe at least one positive effect that this would have toward reducing the overall smoking rates.
https://www.tobaccofreekids.org/what_we_do/state_local/sales_21
Objective: Describe the respiratory system.