Root plant to fuel the process. In return, the plant takes nitrogen compounds produced from ammonia by the bacteria. The term root crops refers to any edible underground plant structure, but many root crops are actually stems, such as potato tubers. Edible roots include cassava, sweet potato, beet, carrot, rutabaga, turnip, parsnip, radish, yam and horseradish. Spices obtained from roots include sassafras, angelica, sarsaparilla and licorice. Sugar beet is an important source of sugar. Yam roots are a source of estrogen compounds used in birth control pills. The fish poison and insecticide rotenone is obtained from roots of "Lonchocarpus" spp. Important
Sweet Polly Oliver Sweet Polly Oliver Sweet Polly Oliver is an English broadside ballad (Roud #367), traceable from 1840 or earlier. It is also known as "Pretty Polly Oliver" and has several variant sets of lyrics, set to a single anonymous melody. It is one of the best known of a number of folk songs describing women disguising themselves as men to join the army to be with their lovers. Thomas Root wrote a symphonic band arrangement and Benjamin Britten wrote an arrangement for voice and piano. The main theme of Terry Pratchett’s book, Monstrous Regiment, in which a young woman named Polly,