<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why do black people have such big lips?
<|assistant|>
Black people historically have had more prominent lips than other racial groups due to the evolution of certain traits that were adaptive in their environment. Specifically, broader and fuller lips have been associated with higher levels of protection from sun exposure, higher temperature perception, and more intense expressions of emotion. In addition, wider lips are also associated with better voice and lip-reading skills in those populations.