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.
At the GS-9 grade, each pay step adds $1,399 to the annual salary. Pay steps are earned based on time in service and the employeeâs work performance. General Schedule employees are referred to as white-collar workers under the federal classification system.