Heat Stress

                One environmental stress that interrupts homeostasis is heat. The way heat disrupts homeostasis is by humans having to regulate their body temperature to not over heat. The short-term way humans adapt to heat is by wearing less clothing when it is hot outside or removing jackets as the temperature begins to rise. The facultative way humans adjust to this stress is by sweating, secreting moisture to cool the skin. A developmental adaptation to heat in humans is sweat glands. Cultural adaptations would be the clothing we humans have for summer including tank tops, shorts, and sandals.

Using race to understand this variation would be by seeing as how Hispanics and African Americans come from hotter areas their skin is darker making it harder for them to get sunburn and protecting their skin from the heat. But this is not a very good way to understand variation because all races have developed for example sweat glands. Just because you are white doesn’t mean that is why you developed sweat glands. The humans despite race developed sweat glands due to the stress of heat not skin color.