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.
by Colleen Dumas. Paper money was made by the Tang Dynasty in China in 740 B.C. They made the paper money as an offshoot of the invention of block printing. Block printing is like stamping. Some people used the process for quilts, but the government made ready use of it in printing money. They made paper money because their devalued coins were becoming too heavy to carry. Before the Tang invention there were many other ways to buy things.