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.
The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family. The word may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species.