Hypothyroidism your body functions slow down, making you gain weight and dehydration, or not getting enough fluid, causes dry sticky mouth, what we do know is that several chemicals produced by the can cause itching, most notorious being histamine.
Operations Research (O.R.), or operational research in the U.K, is a discipline that deals with the application of advanced analytical methods to help make better decisions.
Best Answer: An operational definition is a very specific definition used in an experiment, to ensure that all of the researchers collecting data are watching for the same thing. Say you are doing an experiment on altruism where you pretend to trip down some stairs or something and to see if people help you.