1. About 800,000 years ago, the earth was controlled by early humans.
2. About 6 million years ago most early human species became bipedal.
3. The Homo Habilis used to live in Eastern and Southern Africa.
4. About 12,000 years ago, humans managed to control the growth and breeding of some plants and animals.
5. The Sahelanthropus tchadensis is the earliest human species from the timeline.


Answer these questions:

1. What's been the role of climate change in the development of humans? 
The role of the climate change in the development of humans has been very important, because as the time goes by, the climate oscillate more between warm and cool, this condition make the humans change them skeleton, dentition and lose hair. And also in a period of dramatic climate change the human brain size evolved most rapidly.

2. In your opinion, what is the most significant milestone for the human evolution? Why? 
The most significant milestone for me was the rapid increase in brain size, because that milestone made that humans can interact with each others, these bigger brains helped to survive and made the humans think and analize.

3. Which early human species was thought to be the first to use tools made from stone? 
It was the Homo habilis, them name means "handy man".

4. Who were the first human species to travel to and live in Europe? When? 
Homo heidelbergensis, about 700000 to 200000 years ago.

5. Which species survived for the longest time? For how long?
Homo erectus, between about 1,89 million and 143,000 yers ago.