Question

which of the following best describes homeostasis?
the state of maintaining a stable internal environment despite changing external conditions
the state of maintaining a stable internal environment due to electrical impulses
the state of maintaining a stable internal environment due to chemical signals
the state of maintaining a stable internal environment when the external conditions are constant

Explanation:

Homeostasis is the ability of an organism to maintain a stable internal environment (such as body temperature, pH levels, etc.) even when external conditions change. Electrical impulses (like in the nervous system) and chemical signals (like hormones) are means by which the body achieves homeostasis, but they are not the definition of homeostasis itself. Also, homeostasis is about maintaining stability despite changing external conditions, not when external conditions are constant.

Answer:

the state of maintaining a stable internal environment despite changing external conditions