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.
You donât need to wear a suit and tie to work to make six figures. Though it may require self-employment, the support of a labor union and, in some cases, not a small amount of risk to your safety, you can earn over $100,000 at a traditionally blue collar job. The sharing economy, in some cases, also helps.