Environmental protection

Now our Earth mother is suffering from various kinds of injuries, such as the river in the small river is turbid, the sandstorm on the earth, the mother's fever, and so on.

Mother Earth's fever: Earth's mother fever will cause changes in precipitation and wet and dry conditions in various parts of the world, which in turn will lead to changes in the economic structure of countries around the world. In the mid-latitudes, the evaporation will be intense due to the warming of the climate, and now the agriculturally developed areas will degenerate into grasslands; in the high latitudes, precipitation will increase due to warming, and temperate crops will be able to settle here.

Sandstorms have occurred on the earth: sandstorms, also known as black storms, are a natural phenomenon that occurs in desert areas. A large amount of quicksand in the desert area is the source of sandstorms, and the strong winds in spring are the strength of sandstorms.

In the past 100 years, due to excessive human wasteland, overgrazing, deforestation, the surface vegetation has been seriously damaged, and large areas of land have become bare land. As desertification continues to accelerate, the scope of sandstorms has gradually expanded, and the extent of sandstorms has also increased. Gradually increased. In the spring of 2000, the capital Beijing was hit by sandstorms eight times in a row. According to the calculation of scientists, it takes about 2,000 years to scrape off the 18 cm thick topsoil on a piece of grassland; for example, it takes only 49 years to open the grassland into farmland; if it is bare land, it only takes 18 years. Judging from the causes and development of sandstorms, man-made damage to the environment and destruction of surface vegetation are the most important causes of sandstorms. Only by protecting the vegetation and preventing the desertification of the land can the dust storm hazard be truly reduced.

The river water is turbid: Shuiyu Town discharged industrial wastewater due to industrial development. There were a group of inexplicable patients. The patient began to have slurred speech and sluggish expression. Later, he developed numbness, mental disorder, and finally screamed and died. After many years, scientists found the cause of this strange disease: mercury poisoning. Originally, there was an acetic acid plant in Shuiyu Town, which used mercury as a catalyst in the production process and then discharged a large amount of mercury-containing wastewater into Minamata Bay. Mercury is very toxic. It is converted into more toxic methylmercury by the action of microorganisms in water. It is enriched in fish, shellfish, etc., and people who eat these substances contaminated with methylmercury have got terrible waterlogging disease. Methylmercury can accumulate in the human brain and damage the brain's nervous system, so cats and people are crazy.