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.
Anesthesiologists are doctors who specialize in anesthesia. During surgeries, they administer the anesthesia, oversee the maintenance of the anesthesia, as well as the patient's vital functions. They also provide their services to other types of patients such as women in labor or people in intensive care units.