Tobacco (Nicotiana alata) flowers. This plant produces the toxic substance nicotine,which protects it from damage by insects. Small doses of nicotine produce a pleasurable stimulus in humans,but habitual use leads to addiction | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Mosolova, Maria |
Taille de l’image : | 4300 px × 2859 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |