The alkaloid content of tobacco leaves varies greatly depending on the soil conditions, use of fertilizers, and the degree to which the plant is ripened.[] A number of phytosterols such as cholesterol, campesterols and alcohols, phenolics, chlorogenic acid, rutin, carboxylic acids, turpenes, polyphenols, aromatic hydrocarbons, aldehydes, ketones, amines, nitrites, N- and O-heterocyclic hydrocarbons, pesticides, and alkali nitrates have been detected.[] Toxic metals including mercury, lead, chromium, and other trace elements and several free amino are also present.[] Nicotine, the addictive substance, exists in two forms, acid (bound) and base (free)
Rithvik Dhanjani Burning fossil fuels emits carbon dioxide
lycopersicum parted company some 78,000 years ago, long before humans were in the landscape in South America
J Pharmacol Exp Ther 307 : 339348
Jones, M., Lewis, S., Parrott, S., Wormall, S., and Coleman, T