Different types of hormones are secreted in the body, with different biological roles and functions. A hormone (from the Greek participle âá½ÏÎ¼á¿¶Î½â) is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.
exists and is an alternate of . A simple reason for the invention of the stapler would be to ease our work and keeping all the documents together. It was invented when a lot of paperwork started taking pace and need to keep them together increased. King Louis XV invented the first stapler in 18th century.
Folders - paper or cardboard folders are used to keep loose documents together. The folders are placed inside suspension or box files. Suspension file -the suspension files are used to keep documents in filing cabinets. The files are put into the drawers upright. The suspension files hangs down from the cradle. These files always remain in the cabinets but folders inside them can be taken out.