Earth material Sedimentary rock Clastic rock. Sedimentary breccia. A breccia (coarse-grained clastic rock composed of angular broken rock fragments held together by a mineral cement or a fine-grained matrix) formed by sedimentary processes. This category is also used for breccia.
What is a Silverfish Bug? The Silverfish Bug, also known as Lepisma saccharina, is a small insect without wings. Its name, silverfish, comes from its silvery color and the fact that is resembles a fish. Silverfish's mostly rely on carbohydrates to survive that come from various natural sugars and starches. In urban environments, they will eat glue, paper of any kind including books, sugar, coffee and even clothing, making them quite a pest when they are able to make their way into homes.
Spanish conquerors discovered that South America was home to rich veins of silver and silver ore, and they mined that wealth enthusiastically; according to the Silver Institute, an industry trade group, 85 percent of the silver produced worldwide came from Bolivia, Peru and Mexico between 1500 and 1800.