Centuries ago, nicotine did not existed, it was originated by the Native Americans. It came from natural plants and created their own way to use tobacco. It was for the gatherings for other natives to calm their minds from the stresses or situations they have been struggling. Before all this changed, the people from Great Britain, not only took their land, add the harmful chemicals to the point they will used it over and over. When they invented the new way of tobacco, many people in this century do have health problems because they believe tobacco will take away their problems, but the problem is they do not realize the truth behind this drug is and how this particular drug affects them, not only their health, but also their lifestyle. There are common street names for nicotine: smokes, cigs, butts, etc.. On the smokeless tobacco, the street common names are often called chew, dip, spit tobacco, or snuff. This type of drug is part of tobacco leaves. By that meaning, whether someone smokes, chews, or sniffs tobacco, he or she is putting nicotine to the brain. Each cigarette contains about 10 milligrams of nicotine. It is what keeps people smoking without knowing the harmful effects. The smoker sometimes inhale some of the smoke and each puff (not all of them) takes away the air support in the lungs. The smoker received the average from 1 to 2 milligrams of the nicotine of each cigarette. It is possible that a drop of nicotine would kill a person possibly more people if they continue to abuse nicotine. Statistics and facts shows how many humans are using tobacco and shows how much chemicals it is contained. Not only these two, but also shows how many people died from smoking and the causes of it. As you can see it contains more than 4,000 chemicals. The most dangerous chemicals in cigarette are tar and carbon monoxide. For carbon monoxide, it can cause various heart problems; most likely the smokers are the very risk for heart diseases