There are more than five pieces of information about the destruction of the earth

Shocking environmental pollution can be seen everywhere: dark skies, polluted air, cross-flowing sewage, and ...... garbage sieges, even in the ice and snow of the Antarctic penguins, DDT and other pesticide residues have been found, Mount Everest is everywhere? The blue sky and clear water have become a childhood memory and unattainable dream for many people.

The Antarctic ozone hole is caused by excessive use of freon in the past and its emission into the air, which will irradiate a large amount of ultraviolet rays on the earth, increase the incidence of cancer, and increase the temperature of the earth; Red tide occurs in many waters because domestic and industrial wastewater enters the waters, which are rich in nitrogen and phosphorus, which causes eutrophication, which will lead to the death of fish and shrimp, and will also damage people's health through bioaccumulation; The destruction of virgin forests in the United States is man-made, and many trees have been cut down. As a result, many animals have been displaced, and some species have even perished.

Lop Nur, the Disappearing Fairy Lake", that is, Lop Nur was originally a very beautiful lake, but now it has disappeared and become a desert. This is a tragedy of man-made destruction of the ecological environment. With a strong voice, this reportage warns the people of the world to establish the awareness of environmental protection among the whole people and do a good job in ecological protection.

Cutting down trees and digging up river sand.

The cause of animal killing and environmental pollution is mainly caused by human factors. A large number of "three wastes" discharged by people in production and life, as well as sudden accidents in some industrial and living facilities, as well as untreated wastes in hospitals, can cause environmental pollution, and can cause harm in serious cases. During the war, due to the massive use of various ** to kill and injure residents and destroy residential areas, it can cause environmental pollution and destruction.

For example, air pollution in cities causes air pollution, and people's morbidity increases. Water pollution deteriorates the quality of the water environment, and the quality of drinking water sources generally declines, threatening people's health, causing premature birth or malformation of the fetus. Serious pollution incidents not only cause health problems, but also social problems. With the intensification of pollution and the improvement of people's environmental awareness, the disputes and conflicts among people caused by pollution are increasing year by year.

Air pollution, water pollution. There are too many junk resources.

Since the birth of the earth, it has created and dominated the living beings on it with its own laws. At the same time, human beings on the earth have been constantly influencing and transforming the earth's environment for their own survival and development in the long historical years, and have gradually become an indispensable part of the earth's environment. Today, human impact on the planet's environment has moved from a local impact in the Roman era to an era of global impact.

Because of this, humanity is facing a series of unprecedented, major and urgent global environmental problems. Environmental pollution, greenhouse effect, abnormal climate, vegetation destruction, land desertification, etc. have become hot topics for people. From a scientific point of view, these pressing environmental issues involve the interaction of the various parts of the Earth and the habitability of the Earth as a planet.

Understanding and predicting changes in the Earth's environment is a serious challenge for scientists around the world.

The earth is the material source and environment on which human beings depend for survival and development, so human beings have always closely linked their destiny with the evolution of the earth and the impact of the sun on the earth's environment. It is believed that the main factors of the Earth's evolution are due to natural variability, such as changes in solar and inter-earth distances, atmospheric and oceanic turbulence, continental plate drift, orogeny, volcanic eruptions, glacier expansion and contraction, and river changes. However, over the course of several generations, the economic and technological activities of human society have had a clear impact on global change.

In any case, humanity itself becomes part of the Earth system and directly becomes an influence on global change. Human energy production, intensive agriculture and intensification technologies have altered the Earth's reflectivity, the composition of soils and water bodies, the chemical composition of the atmosphere, the area of forests, and even the balance of global ecosystems. In this way, mankind's survival and social development are now facing a series of serious problems.

As we all know, although the origin of human beings is only a matter of a million years, its emergence has had a profound impact on the earth's environment. In the natural competition of biological evolution, human beings have begun to affect the local environment. With the advent of the Industrial Revolution, human beings have learned more skills, and their activities have gradually affected the entire global environment and become another disturbance factor for global environmental change.

As a result, global problems such as land desertification, the "greenhouse effect" and global warming, the destruction of ozone shielding, the sharp decline of forests and the extinction of species, and the shortage of freshwater resources have seriously threatened the survival and reproduction of human beings.

The author writes in detail. Very helpful.

3. Ozone layer depletion.

The ozone layer is the best umbrella for the planet, absorbing most of the ultraviolet rays from the sun. However, in the past two decades, scientific research and atmospheric observations have found that the ozone layer in the Antarctic atmosphere has been thinning every spring, and in fact there is an ozone "hole" in the polar atmosphere.

This ozone depletion is an anomaly, and does it indicate that this UV-absorbing layer is in the midst of a global catastrophe? Through continuous scientific research, it has been found that the ozone layer is seriously damaged by the substances released by human social activities, and of course this phenomenon is also affected by the unique meteorological conditions of the region (polar vortices, cold stratospheric temperatures, polar stratospheric clouds).

Discovery process. Atmospheric scientists from the British Antarctic Survey have conducted a research program in Antarctica, which is conducted on the ground and in the air. Spherical instruments are generally used to measure the composition and chemical properties of the atmosphere through which the instrument travels. Ground-based and space-borne detectors carry out telemetry missions.

These research activities have taken the form of international cooperation. For example, in 1987, some 150 scientists and support staff representing 19 organizations and four countries gathered in Punta Arenas, Chile, to conduct an unprecedented study, the Airborne Antarctic Ozone Experiment. This experiment showed that in 1987 the ozone hole was the largest in history.

The discovery shocked the scientific community.

Mechanism of formation. The causes of Antarctica's "ozone hole" are still inconclusive, the most convincing of which is the pollutant theory. In addition, NASA's Hampton Wise Center Callis et al. have proposed that the destruction of the Antarctic ozone layer is related to intense solar activity; Tung et al. from the Massachusetts Institute of Technology (MIT) believe that the unique atmospheric environment in Antarctica causes ozone depletion in late winter and early spring, and according to atmospheric dynamics, they pointed out the use of a large number of chlorofluorocarbon compounds and the lack of sunlight in Antarctica in early spring to produce a large number of oxygen atoms, and therefore proposed a circulation mechanism that does not require oxygen atoms.

The analysis seems to lead to the following main points: (1) Antarctica"The ozone hole"It is a special phenomenon caused by the participation of polar stratospheric clouds and heterogeneous chemical reactions under the special temperature and circulation conditions of Antarctic spring. (2) The influence of other factors such as polar vortices on gas component transport is not Antarctic"The ozone hole"formation determinants, which can only affect the strength of the ozone hole.

3) The solar cycle changes through photochemical reactions to the South Pole"The ozone hole"The influence of strength and weakness can be negligible.