This document discusses different forms of tobacco and their health effects. It notes that tobacco is a plant native to North and South America that is processed into cigarettes, cigars, smokeless tobacco, and pipe tobacco. While all tobacco products contain nicotine and are addictive, they differ in their tar and carcinogen content. Cigarettes contain over 100 carcinogens and 50 in secondhand smoke. Cigars contain more tar and toxins than cigarettes and can contain 400 times more nicotine. Smokeless tobacco contains up to 28 carcinogens. Pipe tobacco contains equivalent carcinogens to cigarettes and cigars. The document encourages creating a public service project on the harms of a specific tobacco product.