Radiological studies as well as endoscopic procedures are unnecessary in the early management of these patients thus being relegated to recurrent or persistent bleeding. 1  Bonita F. Stanton; Kliegman, Robert; Nelson, Waldo E.; Behrman, Richard E.; Jenson, Hal B. (2007).
Geography can be either a natural or social science; if you are studying the physical structure of the Earth, such as the locations of bodies of water, mountains, rivers, deseâ¦rts, etc., that is a type of natural science, and if you are studying national borders and political divisions marked on a map, that is a type of social science.
Traditionally, fields such as biology, chemistry, physics and their spinoffs constitute the âhard sciencesâ while social sciences are called the âsoft sciences.â A very good reason exists for this distinction, and it has nothing to do with how difficult, useful or interesting the field is.