Much more mobile and has the ability to move around a

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we go everywhere. much more mobile and has the ability to move around a lot. 70,000, 80,000 years ago. Why migrate? -if humans lived in Africa for a long time then why did they move? Because there is a shift in the climate. Water starts to dry up and vegetation is drying up. also Africa is full of people they had to move out. climate change and population competition and curiosity! Looking for new things have more genetic success. How did people cross these bodies of water and how do we know people did that? We look into Australia who had people as early as 50,000 years ago. These people were able to move because sea level has been going up and down. But there are some areas where there is always water at least 70 mile cross over. They walked most of it and also the sea level is lower and the waters are less shallow enough to walk across and tide is low. Other possibility is that you make a boat. This is a technology that people are interested in. When is the first boat? You have to know how to navigate and how to make it move and stuff. We don’t have any boats that are 150,000 years ago. The only evidence is that people had to cross these 70 miles water crossing. Then Australia, population of giant animals vanish! The biggest animal is the kangaroo. One theory is that because these megafauna (big animals) had no predators like humans, they don’t think they are a threat. Easy hunting and attack them and eat them. rapid decline in these populations until these are extinct!
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