TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY
Tobacco flowers and leaves (Nicotiana tabacum). This shrub, native to tropical America, produces the toxic substance nicotine, which protects it from damage by insects and grazing animals. Small doses of nicotine produce a pleasurable stimulus in humans, but habitual use leads to addiction.
Model release not required. Property release not required.