<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
why are some people from africa so black?
<|assistant|>
People from Africa can be Black because they have a genetic inheritance from their ancestors that produced dark skin color, as well as other features. The dark skin is an adaptation to the hot climate that allows them to protect their skin from overexposure to the sun and to reduce loss of water and heat. It also is thought to be an evolutionary relic of when humans first descended from Africa and the dark skin helped the ancestors of Africans protect themselves from ultraviolet radiation from the sun.