Your skin regulates your body temperature through blood vessels and through the process of sweating. The skin is in effect your body's thermostat. When you're out in cold weather, your skin triggers shivering so the blood vessels will contract and keep you as warm as possible.
Explanation:natural selection does produce a change in individuals as well as populations. Explanation: Natural selection is a process through which mother nature screens for the organisms that are best adapted to survive in a habitat.
