Examples of homeostasis include the regulation of body temperature, the pH of extracellular fluid, or the concentrations of sodium, potassium and calcium ions as well as that of glucose in the blood plasma, despite changes in the environment, diet, or level of activity.
Blue-collar workers perform labor jobs and typically work with their hands. The skills necessary for blue-collar work vary by occupation. Some blue-collar occupations require highly skilled personnel who are formally trained and certified.
White Collar is a USA Network television series created by Jeff Eastin, starring Tim DeKay as FBI Special Agent Peter Burke and Matt Bomer as Neal Caffrey, a highly intelligent and multitalented con artist working as Burke's criminal informant. Willie Garson and Tiffani Thiessen also star.