Tobacco is a green, leafy plant that is grown in warm climates.
It can be smoked in a cigarette, pipe, or cigar. It can be chewed (called chewing tobacco)
Electronic cigarette containers filled with liquid that's usually made of nicotine, flavorings, and other chemicals.
A heating device turns the liquid into vapor that you inhale when you take a drag.
Nicotine has more than 4,000 chemicals in cigarettes. It is the chemical that makes tobacco addictive or habit forming.
Nicotine is a stimulant, it speeds up the nervous system to make people feel like more energy.
It also makes the heart beat faster and raises blood pressure.
Most contain the chemical nicotine, which is addictive. When you stop using it, you can go into withdrawal and feel depressed and crabby.