1. 一妻两夫电影完整视频_碰超免费观看公开视频_夜夜春精品视频高清在线

        How easy is it to group people into “races” based on appearance? What about using individual traits? Does everybody classify the same way?

        Try your hand at "sorting" individuals and see if it matches how people think of themselves. Or explore how we might sort people by physical traits.



        Activities require the Flash 6 plugin.

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