Some signs of nicotene addiction include:
Nicotine & Addiction. (n.d.). Retrieved December 16, 2020, from https://teen.smokefree.gov/the-risks-of-tobacco/nicotine-addiction
American Lung Association. “Why It's Hard to Quit Smoking.” YouTube, YouTube, 13 Jan. 2017, www.youtube.com/watch?v=KxvKb8GXwiA.
The 101 on e-Cigarettes Infographic. (n.d.). Retrieved December 17, 2020, from https://www.heart.org/en/healthy-living/healthy-lifestyle/quit-smoking-tobacco/the-101-on-e-cigarettes-infographic
