I stressed the diversity of the children and an in-depth analysis of its biological basis, because hopes are active in the frontline of education workers in a gentle, inclusive vision in the face of any one child. It is difficult to the conditions in which children are now predicting the future, and cannot predict what they will be bred to next generation. In addition, in order to explore the future direction of education development, it is necessary to the process of human evolution as a background to consider this issue.
Lift the origin of life, has to date back to ancient 4.5 billion years ago. At that time, the Earth appears in the universe, interactions of atoms on Earth, constantly repeating chemical evolution and molecular evolution, formed the basis of life-that is, compound molecules resulting. Since then, over 4 billion years ago, producing single cell morphology, 700 million years ago, and finally evolved into multiple cells.
Sexual reproduction begins in 500 million years ago, it made biological evolution more diverse, and accelerate the speed of evolution. 400 million years ago, was born in in the process of evolution of vertebrates, mammals of the 300 million years ago was born.
Mammalian germ cells when the egg and sperm formation, any of the genetic parents of the male and female chromosomes arranged, and some of them to chromosomes cross manner insert Exchange, which features 60 million years after the extinction of dinosaurs evolving, it is also considered motivity of mammalian diversification. It can be said that this process does not exist, humans cannot be born.
Such evolution, an evolution for apes mammals, and thus develop into human ancestors-APE, and 4 million years ago in Africa. Later, after the original person, ancient human, Gnan tall people, new people keluomani Weng people, finally evolve into modern humans.
In addition, we must also see that in the long evolutionary history, mutation is also a large element of diversity. That is, associated with genetic material from the effects of ultraviolet, x-ray and chemical substances on the quality and quantity changes. Such a change is too large, then life difficult to extend, change is too small, and may make the obstacles of life.
But, on the contrary, sudden variation is sometimes also possible to survive, and this brought advantages are likely to continue genetic variation to the next generation.
After human ancestors in Africa, seems to be for some pursuit of, began to migrate to different directions. To about 1 million years to come to the Middle East at present and the Near East, each of them is then further expansion, settled in Africa and the Middle East, the Near East, Europe and Asia. , Our ancestors benefits from diversity, to have children, carry on, extended life.
In this process, there is no doubt that efforts to adapt to the natural environment is the most important. It can be said that manifested in various ways for adapting the diversity of the natural environment has played a positive role. For example, in order to adapt to the local sense of the Sun\'s rays, skin pigment human ancestors settled in Africa heavier people can survive. In contrast, in Europe, of people with less skin pigment can also live in anruo light to survive. In other words, the law of natural selection and the survival of the fittest causes commonly referred to as white people were seen mainly in Europe, Black people were seen mainly in Africa, and race of colour between white and black races between the yellow races occurred mainly in Asia.
Humans must adapt to the natural environment, from broadly, also must adapt itself to the creation of culture and civilization. 2 million years ago, stone tools, Gnan tall human Burial caves, keluomani Weng people by way of painting was referred to as the beginning of human culture and civilization, and thus promote tools developed and formation of the family, social, be the basis of the birth of modern culture and civilization. Of course, developed, in particular the brain\'s prefrontal developed of the human brain is contributing to the development of base.
In this evolutionary process, fully understand the diversity of life forms, one manifestation of life forms that human diversity, and diversity is extremely important for children. It can be said that through the formation of chemical evolution and molecular evolution as represented by the nucleic acid gene complex life appeared on Earth in the future, in order to continue life, in a variety of biological form.
One of them after the birth of the human, developed the technology, developed as an instrument of job machine, conquered the oceans, in every corner of the Earth settled in root. Horn not only reaching the North or South Pole, and the deep sea of humanity, even tried to extend the circle of life to the universe. Therefore, children living in the 21st century is facing important issues for exploration and learning a new way of life.
No comments:
Post a Comment