Which of the following statements is/are true regarding body temperature?

A. The human body is constantly working to maintain a steady internal environment, known as homeostasis.
B. Normal body temperature is around 37°C (98.6°F) and usually does not vary more than a few degrees.
C. To maintain the best environment for normal cell metabolism, the body must keep the core body temperature about the same, even when external and internal conditions try to raise or lower it.
D. All of the above.

The human body maintains a steady internal environment through homeostasis, including regulating body temperature within a narrow range through thermoregulation.

Explanation:

Homeostasis is the process through which the human body maintains a steady internal environment. The body tightly regulates body temperature within a small range, typically around 37°C (98.6°F), through thermoregulation and negative feedback mechanisms. Various factors such as chemical changes, circulation of blood, the nervous system, and the skin play a role in maintaining the normal body temperature.

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