Проблемы окружающей среды

Environmental problems of our time

In the 21st century the whole of humanity, the island became a question on critical environmental issues and conservation of the ecosystem of the earth for future generations. And the decision of the major environmental problems of our planet depends not only on a deliberate policy of world powers, but also from each individual.

The main problems of the ecosystem of the globe can be identified:

Deforestation

Pollution of the air space of the Earth

Depletion of topsoil

Reduction of fresh water

Extermination of wildlife land

The problem of disposal of solid waste

Greenhouse effect

The problem of prevention of global thermonuclear war

Pollution of the air space of the earth

The existence of all life on earth depends on the degree of air pollution. Almost all developed countries of the world air pollution emissions from industrial enterprises and car exhaust reaches a critical level. And although it is now almost all enterprises are equipped with the latest cleaning systems is not enough. Condition of the air basin land is steadily deteriorating.

Deforestation

As we know the forest is green lungs of the world. It is thanks to him that the air enriched with oxygen and cleaned of contaminants. Human activities have led to the fact that deforestation is conducted catastrophic rates, and the recovery of the globe an array of green leaves much to be desired.

Depletion of topsoil

Due to massive deforestation and improper farming techniques of agricultural land fertile soil layer is steadily dwindling. Take, for example, virgin lands of Kazakhstan, where due to improper farming techniques affected by wind erosion thousands and thousands of hectares of land. Moreover, the use of chemical fertilizers and pesticides lead to the poisoning of all life on earth.

Reduction of fresh water

This process is closely related to the decrease of forest and water pollution industrial wastes. Even today in many river basins and lakes is forbidden to swim because of contaminated water exceeds all limits. Shortage of drinking water in the future threatens ecological disaster.

Extermination of wildlife land

Human activity in a special way affects the safety of the fauna of the globe. So deforestation, pollution of water bodies leads to the extinction of many rare animals inhabit our planet. So quite a lot of animals that were carried out in our woods and fields just 50 years ago, is on the verge of extinction or have disappeared from the face of the planet. And though the world created quite a lot of reserves where human activities are prohibited, wildlife land is steadily decreasing. This applied his hand and poachers who are ready to kill for profit last tiger in the Siberian taiga. And if this process does not stop our descendants of wild animals will know just from the pictures.

The problem of disposal of solid waste

The problem of disposal of solid waste sufficiently urgent task today, especially for large cities. And if we do not want to land turned into one big dump this problem needs to be addressed urgently. And although they are processing plants is not enough.

Greenhouse effect

Greenhouse effect - is heating the inner layers of the Earth's atmosphere due to the transparency of the atmosphere to the main part of the solar radiation (in the optical range), and the absorption of the atmosphere of the primary (infrared) thermal radiation of the planet's surface, heated by the sun.

In the Earth's atmosphere is absorbed by the molecules of H2O, CO2, O3, and others. The greenhouse effect raises the average temperature of the planet, softens the differences between day and night temperatures.

The problem of prevention of global thermonuclear war

One of the global problems - the problem of prevention of global thermonuclear war. Computer simulations show that if a nuclear conflict has arisen will be used only part of the lethal potential of atomic and hydrogen weapons, and then the world will come "nuclear winter" or "nuclear night". From the cumulative effects of radiation, explosions and fires into the air gets a huge amount of dust particles, which dramatically reduce sunlight at the earth's surface and reduce the temperature of the air to a level that made it impossible to exist in the world of man and the majority of plant and animal species.

List of references

http://ecologu.ru/

http://studfilosed.ru/

http://www.tsput.ru/