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.
Leadership 6/05/2013 @ 12:10PM 298,865 views. 10 High-Paying Blue-Collar Jobs. We tend to associate hefty paychecks with briefcases, neckties and lab coats â but it turns out thereâs plenty of money to be earned by those who sport hard hats and coveralls.