Final answer:
Nicotine is an addictive drug found in cigarettes. Tar is a sticky, dark fluid produced when tobacco burns. Carcinogens, carbon monoxide, formaldehyde, and cadavers are also associated with tobacco use.
Step-by-step explanation:
Nicotine is the addictive, stimulant drug found in cigarettes. When tobacco burns, it produces tar, which is a thick, sticky, dark fluid. Carcinogens are cancer-causing substances that can be found in tobacco smoke. A colorless, odorless gas called carbon monoxide is also present in tobacco smoke and can be fatal when inhaled. Formaldehyde is the chemical used to preserve dead animals and cadavers. Lastly, cadavers are the bodies of dead people preserved for research and educational purposes.
Learn more about Tobacco and its associated substances