Why does the earth divide the seasons?

About 4.5 billion years ago, a Mars-sized asteroid collided with the Earth. As a result, the layers of rock and dust gradually formed into the moon. It also causes the earth to tilt slightly when moving in orbit around the Sun.

Because of that inclination, at any given time, the amount of sunlight in the Northern Hemisphere and the Southern Hemisphere will be opposite. This cycle changes with the season of the earth.

According to Don Attwood, an ecological anthropologist from McGill University in Montreal, a world without a division between seasons is a world without modern technology, no steam engine, even not even wheat . People may never escape life in small, sparsely settled settlements, and are very likely to die from insect-borne diseases.

If the Earth does not tilt, there is no division of seasons in the year.

If this earth is a humid tropics such as the Congo rainforest, continuous rainfall will lead to rapid erosion, barren arable land, causing serious consequences for agriculture."As a result, human populations will remain at very low levels ," Attwood said. 'The population density and agricultural productivity are low, the settlements are scattered, scattered, many kinds of pathogens appear in humid environments, the development of a modern civilization is impossible. Build on such platforms'.

In addition, the cold weather of winter is an extremely suitable habitat for most tropical insects that carry deadly diseases. Typically HIV - a virus that starts from tropical forests.

However, if the Earth is warm and dry like the Arabian Peninsula, the status of the species is much worse, even many species will be on the list of endangered.

It is obvious that the arid regions have very little potential to develop into large, complex societies, except Dubai - where people live entirely on energy from oil wells in the country. they.

But in general, the attraction of the moon helps the earth stabilize its tilt when rotating around the sun, so the seasons of the year will never disappear completely. However, global warming caused by the increase in the greenhouse effect may change a lot about the state of winter.