About 75% of the rock outcroppings on continents are sedimentary rocks. Detrital sedimentary rocks are those for which the material has been transported as solid particles. The particles themselves may have derived from either physical weathering or chemical weathering. Sedimentation means settling from a fluid, either water or air.
An anesthesiologist is a medical doctor who keeps a patient comfortable, safe and pain-free during surgery by administering local or general anesthetic.
An anesthesiologist is a doctor (MD or DO) who practices anesthesia. Anesthesiologists are physicians specializing in perioperative care, development of an anesthetic plan, and the administration of anesthetics. He or she has finished college, then medical school (four years), then an internship (one year) followed by a residency in anesthesia (three years). Some anesthesiologists pursue additional years of training (a fellowship).