What is the significance of the use of fire for human development

The first humans were "Homo sapiens", and these humans lived by hunting and eating fruit. Humans at that time were animals that ate raw food, so their lifespans were also very short. At that time, people were full of fear of the natural world, especially "fire".

Later, by chance, I tasted meat that had been roasted by fire, and I felt that this kind of cooked meat was better than raw meat. So get a source of fire in nature and use it to cook, keep warm, and fend off birds and beasts!

Later, humans discovered that they could drill wood to make fire, so that humans had the ability to control nature. In addition to the initial use of fire for cooking, heating, and defending against wild beasts. Moreover, the use of fire is becoming more and more extensive, and the skills of human beings are also increasing.

With the help of fire, some iron and copper can be smelted, and these metals can be processed into weapons. Also thanks to the action of fire, people have learned to live in climate. Before the fire, the area of human activity was relatively small, but after the fire, they began to explore areas and areas where they had never lived.

In the process of long-term use of fire, it was found that the soil became very strong and impermeable after cultivation. He fired a variety of utensils according to the living tools needed by the people at that time, and later invented pottery.

The success of pottery manufacturing is the result of human beings under the action of fire, a physicochemical reaction to a substance.

Change has an earlier meaning. The development of primitive agriculture lies in the rational use of fire, and it is also closely related to this connection, and it is with this connection that people play a very important role in settlement. As mentioned earlier, with the improvement of fire technology and bronze ware, due to the birth of wind blast technology, people invented the smelting of pig iron.

With these iron tools, large-scale deforestation began, and wasteland was reclaimed for agriculture and animal husbandry. Later, he also promoted the invention of firearms gunpowder, and the invention of firearms gunpowder is also the driving force of human development. Fire contributed to the development of social production in the early days.

More than 800 years ago, a magical black stone was discovered and used as fuel in place of wood. It is "coal". In modern times, humans have used the heat generated by the combustion of coal to create a steam engine.

Through the first industrial revolution.

It has promoted the progress of modern scientific and technological civilization. Including our current use of fire to dissipate energy (thermal power generation), the root cause of all this is inseparable from the discovery of **, and it is also inseparable from **. In this hot summer, fire can serve us as well as hurt.

Therefore, we must also pay attention to fire hazards, and also have a certain sense of reverence for nature and "fire".

Keeping warm, driving away wild animals, and eating cooked food are both nutritious and hygienic.

The occurrence of diseases and the discovery of fire also contributed to the understanding of nature.

There is also fire to refine metal.

Create tools for production and life.

Agricultural production has been promoted.

It has accelerated the development of human society.

The meaning of fire.

1. Eating cooked food is easy to absorb, which not only makes apes obtain richer nutrients, but also reduces the muscles needed to bite raw food, and accelerates evolution; Cooked food and boiling water make apes less sick;

2. Slash-and-burn farming, fire promotes the development of agriculture and increases yield; The use of copper, the use of iron, and the invention of pottery are all inseparable;

3. Fire is the most advantageous tool for primitive people to drive away insects, snakes and beasts in the dark night;

2. As for the factors that play a positive role, we often mention labor, which not only exercises the ape-man's body, but also the ape-man's brain. The body and brain accumulate from quantitative changes to qualitative changes, and at a certain moment, human beings are born. But I think the role of natural selection is also very large.

Natural selection has screened out the anachronistic genes of ape-mans and is a very effective genetic filter. Then there is the natural environment, the end of the ice age brought with it an abundance of food. So I think the main factors are:

1. Labor (or survival process), 2. Natural selection, 3. Suitable living environment.