Homeostasis is the maintenance of a stable internal environment. Temperature is one aspect of the internal environment that we regulate via homeostatic mechanisms. Hypothermia results when the homeostatic mechanism responsible for temperature regulation is not capable of maintaining homeostasis due to extreme external factors.
2,3, and i am not 100% sure but i also think 5.... when you starve your body attacks fat and muscle to use for energy until you consume some sort of calorie.
