If the weather changes suddenly

Since modern times, human society has developed rapidly, but the damage to the earth's environment has become more and more obvious, the most obvious of which is global warming. However, in recent years, all countries in the world have realized the harm in this respect and started to pay attention to energy conservation and emission reduction, but the effect is not obvious. After all, the destructive development has been so long that it is difficult to change the development direction suddenly in a short time. So how terrible is global warming? ?

What happens when the ice in the Arctic and Antarctic melts?

Higher temperature in high latitudes leads to more grain-producing areas, while higher temperature in low latitudes leads to lower grain production, which is unfavorable to most developing countries, because most of them are in middle and low latitudes. Biodiversity is destroyed. Melting glaciers, rising sea levels, endangering low-altitude areas (for example, Tuvaluans have decided to relocate the whole country) and more unstable precipitation (note, right? Unstable? Neither more nor less)

Is global warming unprecedented now?

No one knows whether the current environmental problem is serious or not, but can only speculate on the results it can produce. Judging from the results, it is very serious. Global warming brings not only warming, but also extreme weather. When the temperature gets warmer and exceeds the critical value of normal change, the weather system will become chaotic. I don't know if it is clear here. For example, the sun turns water into steam and turns it into water after cooling. The process is an ordinary cycle, but if the temperature is too high, it will turn a lot of water into steam, and steam will take away a lot of heat to turn water into water. This will lead to too much heat plundered, and it will get colder and colder when it is cold. Global warming will not only make our life hotter, but also make the sun bigger. It's the chaos of the weather system. Therefore, if you want to eat something, eat something and do something, you can only expect Musk to find another home. The ecology of the earth is already an irreversible problem.

If all the ice and snow in the Antarctic and Arctic melt, how much land will be left?

All melted, and the sea level changed little. Because the water on the earth's surface accounts for only a small part of all the water on the earth, the sea level is a balance point between the water in the crust and the surface water, and the crustal movement has great influence on the sea level change. Needless to say, the Arctic, the sea level does not move every year; Only the edge of the Antarctic is thick with ice and snow, the inland is completely dry without precipitation, the strong wind evaporates quickly, and there is no snow at all. In fact, the edge of ice and snow in Greenland has changed greatly in winter and summer, and it has never affected the sea level. BTW global warming is a false proposition, and the tilt of the earth's axis is the key to the earth's temperature. In addition, magnetic activity is another top priority of the biological environment.