1. Early Human Beings (p.10)
http://quizlet.com/18629349/ochw-010-early-humans-p10-a-flash-cards/
Click here to edit.
Beginning in Africa, humans spread across the world. The differences in appearances we see today are the result of chance and local conditions. All peoples are closely related. There is only one human race.
单击此处进行编辑.