Who were the hobbits?

The "Hobbits" is a nickname. The real name is Homo Florensinsis. They lived 38,000 to 18,000 years ago. The "Hobbits" were small but intelligent and had a lot of tools. They had a very good brain.

Why were tool-making and language important for the development of human culture?

Tool making was important for the development  because they had to speak how to make the tools and what they are used for. So they needed language. When they wanted to tell their children how to do it they need language too. That's why they used tools.

On Our Two Feet

Why do early human began to walk on two feet?

There are a lot of reasons why they started walking on two feet.
One reasons was that they have to stand up when they want to use their tools because they have to hold it into their hands.
 Another reason is that they have to stand up to look over the high grass, the grass in Africa was 5 inches high( that's very high) to see what is there or to go somewhere or when they want to catch some animals for their food.

Stonehenge

Stonehenge is an assembly of huge megaliths in Wiltshire, England. It was built in 1550BC. It is a mystery because nobody knows who built it and who brought the megaliths to this place because one megalith has the weight from 80 tons.

My first theory is that Stonehenge is a burial place for the dead because archaeologists found a lot of skeletons of human's bodies there. Maybe Stonehenge is a monument of the war between Ireland and England. Or it was the ancestor who was materialized in the stone.

Another theory is that Stonehenge was a UFO landing site. Some people think that it was built to honor the aliens or it was built from aliens.The form of Stonehenge looks like an alien space craft. Probably it is only a monument for extraterrestrial visitors.

My last theory is that Stonehenge is an astronomical observatory. One opinion is that it was a megalith calender which they used for out dates or reflect by predicts of astronomical events. Both camps think that the alignment to the sun and the moon were used for taking certificate of ritual. Gerard Hawkins identified 165 points which are linked to the astronomical phenomenon.

I believe that Stonehenge is a place for the dead because the archaeologist found a lot of human skeletons in Stonehenge. I think that they built Stonehenge as a palace because they buried there kings there. I think that they buried their famous people there.

Fire

How does the use of fire demonstrate prehistoric people's ability to adapt to their environment?

With the fire they learned how to cook, protect from wild animals, get light, get warmer and went to colder places because they know that they can heat there with fire.