Write a guide. For many people, it is easy to tell if your Ray-Ban sunglasses have polarized lenses, but some people are unsure and want to know for certain. There are two ways to tell: first, it could be written on the inside of the ear band, and, second, you can look on the top corner of the lenses.
toxins in food. in nutritional disease: Toxins in foods. A greenish tinge on potatoes, although merely the harmless substance chlorophyll, indicates that the natural toxicant solanine may be present. Solanine builds up when a potato is handled roughly, exposed to light or extremes of temperature, or is old.
Family: Solanaceae Juss. Genus: Solanum L. Solanum tuberosum L. Potato is a member of the nightshade family (Solanaceae), which also includes tomato ( Solanum lycopersicum), aubergine or eggplant ( S. melongena), chilli pepper ( Capsicum annuum) and petunias ( Petunia species).