3. why did some modern humans leave africa?

Brief Explanations:

There are multiple theories. One is the search for new resources like food and shelter as populations grew. Another is climate - related changes that made migration more favorable, such as shifts in temperature and availability of water sources. Also, human curiosity and the drive for exploration could have played a role.

Answer:

Multiple factors like resource - seeking, climate changes, and human curiosity likely contributed to modern humans leaving Africa.