Fig. 1.
Image showing the composition of a cigarette, with the chemicals present being extremely toxic and harmful to the human body (Benowitz and Fraiman, 2017).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.