Soybean crayons and soya beans. Soybean crayons were developed in around 1993. They are a biodegradable environmentally-friendly alternative to paraffin wax used in traditional crayons. They are made from soya beans (Glycine max),shown in the background | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bond, Martin |
Taille de l’image : | 5138 px × 3425 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |