Nutrition class. Teacher pointing out which foods are a good source of vitamin A. Vitamin A plays an important role in maintaining healthy skin and mucous membranes, as well as in growth, reproduction and night vision. Photographed in Garbabi, Nigeria. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Crump, Andy |
Bildgröße: | 3648 px × 2432 px |
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