Human Variation and Race 1. Heat negatively impacts the survival of humans by disturbing homeostasis when the body either gets too hot or looses to much heat. When our bodies get hot our body's way of regulating itself is by sweating. Sweat helps the body cool down, but while we sweat our bodies are not only getting rid of water they are also getting rid of important things like electrolytes, like sodium and chloride. If our bodies lose enough water and electrolytes and we do not replenish them, this can cause serious harm to our bodies. We can become dehydrated which can make us tired, get headaches, and become confused. Becoming too hot also poses health risks, if our body temperature reaches 104 degrees Fahrenheit, we can get what is known as a heat stroke, this can bring on symptoms of confusion, fainting, vomiting, seizures, coma, and even death. Heatstroke is a real medical emergency. 2. Four ways in which humans have adapted to this stress are: Short term adaptati...