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.
Nutrients found in potatoes: 1  Carbohydrates. 2  Protein. 3  Fibre â much more than rice, particularly if eaten with its skin.  B vitamins and vitamin 1  C. Magnesium, iron and potassium (high amounts, more than banana)  Low calorie â 200 calories in four small boiled potatoesââ.