Sometimes it's a complex system of technical terms, such as the specialized language used in medicine or law. In other cases, it's a less-formal system of abbreviations and acronyms. For example, job advertisements frequently use acronyms such as DOE or EOE to streamline their postings. Understanding the meaning of these and other terms can simplify the job-hunting process.
Limestone hills, Cotswolds. The Cotswold hills are made of Oolitic limestone, a type of limestone made up of small round grains. These formed in shallow, warm waters like those found today around Florida and parts of the Caribbean Sea, where calcium carbonate is deposited from sea water due to evaporation.
Limestone is found in many parts of the world, both on land and in water, including Central America and England. Numerous conditions exist to produce many types of limestone. The skeletons of invertebrate animals make up limestone originating from coral reefs. Algae that live within the reefs secrete calcium carbonate to seal the structures of the organisms together, helping to form the hardened structures.