Just like the shell of a clam, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite). in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur.
Rimula is a genus of fungi in the Helotiales order. The relationship of this taxon to other taxa within the order is unknown (incertae sedis), and it has not yet been placed with certainty into any family. ^ Lumbsch TH, Huhndorf SM. (December 2007). Outline of Ascomycota â 2007.
Arugula is a common addition to tossed salads. Arugula is popular in the Mediterranean region, where it's often used as a pizza topping. Peppery arugula is a good addition to a main dish salad that contains other fresh greens and grilled chicken.ative to the Mediterranean region, arugula has been grown as a vegetable since the Roman era. The Romans ate the leaves, used the seeds to flavor oil, and made aphrodisiac and medicinal compounds from the plant. Arugula is very low in calories and is a good source of vitamins A and C, folate, calcium, and magnesium.