High temperatures occur frequently and floods occur frequently. Why do scientists think that the earth's climate is close to the critical value?

Today, with the rapid development of science and technology, people pay more attention to the environment besides scientific and technological innovation. The earth is the home and foundation of human existence. In recent years, all parts of the world have developed rapidly before recovery, which has caused irreversible damage to the environment. However, the global temperature is still rising, and the trend of global warming has not been alleviated and controlled.

Some people may wonder, isn't global temperature rising a good thing? In this way, people don't have to be attacked by the cold. Of course not. Global warming will cause a series of reactions, leading to species reduction and environmental deterioration.

Global warming will melt the Arctic glaciers, leading to sea level rise, which may lead to the inundation of some coastal areas and the sharp decrease of land area. In addition, glaciers are fresh water resources on which we depend. If they all melt into sea water, we will drink less and less water.

The increase of carbon dioxide will reduce the oxygen in the sea, thus destroying the balance of the biological chain on the seabed and causing species extinction. There was a species extinction in the history of biological evolution because the oxygen content in seawater was insufficient and the carbon dioxide content increased. Global warming has increased the frequency of extreme weather. In 20021year, the flood disaster in Zhengzhou was very serious, and the sandstorm in the north and northwest was also very serious. All kinds of extreme weather followed, making everyone worry about what happened to the earth.

Global warming not only affects the environment, but also makes it more difficult for human beings to survive. Needless to say, marine life, if there is less and less oxygen in seawater, the biological chain on the seabed will be broken immediately, and the creatures on the seabed will suffer unprecedented extinction. Life on land can't run away, and life in tropical areas near the equator can't stand the high temperature. If I make some animals that can't adapt to today's high temperature, it may become extinct.

According to scientists' research, the climate has only one critical point, and once it exceeds this critical point, the global climate system will collapse. The first collapse of the climate system indicates the collapse of the earth's environment. Immediately after the appearance of extreme weather and the collapse of the biological chain, the living space of human beings has shrunk dramatically. The strength of human beings is very small in front of nature, and various disasters will drastically reduce the number of human beings. The reduction of human population will make human civilization retrogress, and the level of science and technology may retrogress. At that time, the extinction of mankind was an irrefutable result.

However, human beings are very close to that critical value. In order to enable human beings to survive healthily before the end of life on earth, it is urgent to protect the environment and curb the trend of global warming. After all, with our current level of science and technology, there is no way for all mankind to move to another planet, and we have not found a planet suitable for living. If global warming intensifies the destruction of the earth and our technology has not reached its peak, then mankind can only do nothing.