7 interesting facts you need to know about human evolution Bashny.Net

Science continues to delve into the past in search of the answer to the question of how to develop the kind of homo sapiens. This site contains interesting information about the evolution of man and how important role in this process is played sluchay.1. Human face shaped in such a way to keep udarNasilie played a major role in the development of human physiology than we previously thought. Researchers believe that men's faces are formed in such a way as to minimize injuries from blows during fights for women, food and territory.

If this theory is correct, people were not noble savages, who became aggressive because of the civilization. Instead, our physical ability to develop so as to improve our fighting force.

2. Human hands adapted for application udarovPo compared with monkeys, the same features that allow us to clench his fists - short four fingers and the palm at a long, strong and flexible thumb - give us the agility to create and use tools. But chimpanzees can also make instruments, but are not able to clench his fists.

Scientists believe that the aggressive nature of man has turned our bodies into a fighting machine. A man beating his fist, hits harder than his hand, without hurting yourself. Fists can also be used to intimidate.





3. Man - the only primate teeth whose size decreases with increasing size mozgaV over the last 2, 5 million years the size of the human brain increased and decreased the size of the teeth. We - the only primates that can boast.

Normally when the brain is growing, growing and teeth, because the body needs more energy from food. Therefore, scientists call what happened to the people, an evolutionary paradox. They believe that it occurred because of the fact that people are eating more meat, which nourishes the brain protein.

4. Grandma helped women live dolsheBabushki made us who we are. According to this evolutionary theory, humans duration of life more than the apes because grandmothers helped feed the grandchildren. Other primates themselves looking for their own food after weaning, but not people.

When human grandmother began to help feed the children, the mothers were able to give birth to more offspring. The simulation showed that the evolution of the women who die immediately after child-bearing age, living up to a decade after menopause took 60 thousand years.

5. Throwing made us lyudmiRannie people have learned to throw stones and sharpened wooden spear while hunting almost two million years ago. According to scientists, even a chimpanzee can not be compared with the people in these skills.

While watching the recording baseball games, scientists realized that the human arm works like a slingshot, maintaining and releasing energy during the throw. Some features of the torso, shoulder and arm specially developed to help us to store this energy.





6. Duration of life may be associated with extremely slow exchange veschestvLyudi and other primates burn at least 50% fewer calories than other mammals. To burn as many calories as burned animals of the same size in a day, a person will have to run a marathon.

Explain why we are growing so slowly, so rarely have children and live so long can we slow our metabolism. By the way, the athletes, it was found that the primates in cages at the zoo to spend as much energy as their counterparts in the wild. This means that physical activity affects the amount of calories burned in a day is much less than we thought.

Scientists believe that environmental conditions have affected the development of a slow metabolism, which gives us long life.

7. The Irony of Fate, influencing the human evolyutsiyuBiologi wanted to know how old the protein became sensitive to cortisol - a hormone involved in numerous biological processes. After studying thousands of alternate versions, they found only one answer - it was an accident. Should byly happen two extremely rare mutation, the protein began to respond to cortisol. And despite the extremely low probability of such an event, or rather, a series of events, they occurred. The circumstances differently - we would not be human beings. The irony? .. Evolution.



via factroom.ru