Why are there more and more extreme weather

Global warming and the increasingly unstable climate system have led to more and more extreme weather.

Causes of global warming: population explosion, air pollution, deterioration of marine ecological environment, land destruction, acid rain hazard, volcanic activity, and periodic orbit change of the earth.

1, population explosion

Population explosion is one of the main factors leading to global warming. At the same time, it also seriously threatens the balance of natural ecological environment. Such a huge population will emit an amazing amount of carbon dioxide every year, which will lead to a direct increase in the content of carbon dioxide in the atmosphere, and the resulting greenhouse effect will directly affect the climate change on the earth's surface.

2. Atmospheric environmental pollution

The increasingly serious environmental pollution has become a major global problem and one of the main factors leading to global warming. 2 1 century, the study of global climate change clearly shows that the temperature of the earth's surface has been rising since the end of last century.

3. The marine ecological environment is deteriorating.

The change of sea level is on the rise. According to experts' prediction, by the middle of the next century, the sea level may rise by 50 cm. If correct measures are not taken, it will directly lead to the destruction and pollution of fresh water resources. In addition, a large number of toxic chemical wastes and solid wastes from land are continuously discharged into the ocean, and major oil spill accidents in seawater and the destruction of coastal ecological environment by human activities are the main factors that destroy the marine ecological environment.

4. The land was destroyed.

Irrational agricultural production is the main cause of soil erosion and desertification. As we all know, good vegetation can prevent soil erosion, and human activities continue to destroy vegetation due to excessive felling of trees, reclamation of land for agricultural production and overgrazing. Soil erosion reduces soil fertility and water retention capacity, thus reducing soil biological productivity and its ability to maintain productivity. It may also cause large-scale floods and sandstorms and the deterioration of the ecological environment.

5, the harm of acid rain

The influence of acid rain on the ecological environment has attracted more and more attention from all countries in the world. Acid rain will destroy forests, acidify lakes and endanger life. In the 20th century, most acid rain concentrated in Europe and North America, and occurred in developed countries and some developing countries.

6. Volcanic activity and periodic orbital changes of the earth.

The earth's periodic orbit changes from ellipse to circle, which is closer to the sun. According to a scientist's research, the temperature of the earth has been alternating between high temperature and low temperature, with certain regularity.