Environmental problems - a number of factors which mean the degradation of the natural environment.Most often they are caused by human activity: the development of industry and technology began to experience problems related to violation of balanced conditions in the ecological environment, which is very difficult to compensate.
One of the most destructive factors of human activity - pollution.It manifests itself in an increased level of smog occurrence of dead lakes, technical water saturated with noxious elements and unsuitable for human consumption, as well as due to the extinction of some species.
Thus, a person on the one hand, creates the conditions for comfort, and with another - destroys nature and harms, ultimately, himself.Therefore, the recent attention among scientists is on the main environmental issues and is aimed at finding alternatives.
main environmental problems
originally shared environmental problems under the terms of the scale: they may be regional, local and global.
example of a local environmental problem is a plant that does not purify industrial wastewater before being discharged into the river.This leads to the death of fish and human harm.
As an example we can take the regional problem of Chernobyl, to be exact - the soil, which are adjacent to it: they are radioactive, and pose a threat to any biological organisms that are in the area.
Then we will pay attention to global environmental issues.
Global environmental problems of humanity: the characteristic
This series of Ecology has a huge scope and impact directly on all environmental systems, in contrast to the local and regional.
Environmental issues: global warming and the ozone hole
warming of the Earth's inhabitants felt mild winters, which were previously rare.Ever since the first international geophysical year, the temperature of the air layer squat increased by 0,7 ° C.At the North Pole the lower layers of the ice began to melt due to the fact that the water is warmed by 1 ° C.
Some scholars are of the opinion that the reason for this phenomenon - the so-called "greenhouse effect", which arose due to the large amount of fuel combustion and concentrations of carbon dioxide in the atmospheric layers.Because it breaks down heat loss and air cools more slowly.
Others believe that the warming is due to solar activity and the human factor does not play a significant role.
ozone hole - another problem of humanity, related to technological progress.We know that life originated on Earth only after there was the protective ozone layer, which protects organisms from strong UV radiation.
But at the end of the 20th century, scientists discovered that over Antarctica is very little ozone.This situation persists until now, the damaged area at the same time equal to the size of North America.Such anomalies are found in other areas, in particular, the ozone hole over there Voronezh.
reason - active launches of rockets and satellites, as well as aircraft.
Environmental issues: desertification and the loss of forests
Acid rain, the cause of which - working power, facilitate the spread of another global problem - the destruction of forests.For example, in Czechoslovakia more than 70% of the forests destroyed by these rains, and in the UK and Greece - 60%.Because of this, entire ecosystems are violated, however, mankind has been trying to fight this artificial trees planted.
Desertification is also now a global problem.It lies in the impoverishment of the soil: large areas are unsuitable for use in agriculture.
person contributes to such areas, carrying not only the soil, but also the parent rock.
Environmental problems caused by water pollution
supply of fresh clean water that can be used, too, are greatly reduced in recent years.This is due to the fact that people pollute its industrial and other waste.
Today, half a billion people lack access to safe drinking water and two billion live without filters for the purification of polluted water.
Thus, we can say that in the present and the future of many environmental problems humankind itself guilty and he has to deal with some of them in the next 200-300 years.
