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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Mosolova, Maria |
Bildgröße: | 4300 px × 2859 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |