Calentamiento global

Solo disponible en BuenasTareas
  • Páginas : 7 (1581 palabras )
  • Descarga(s) : 0
  • Publicado : 7 de septiembre de 2010
Leer documento completo
Vista previa del texto

The global warming is an average environmental phenomenon that affects all the alive(vivacious) beings of the planet, some of the principal effects of the global warming are the following ones:

· There produces aridity to Itself in the land which concerns the agricultural activities and of the field.
· Thetemperature of the air will increase even in 5 º centigrades.

· The quantity of ice in the poles has diminished in 10 %, which causes that the level of the sea rises.
· The migratory birds come before to his springs destinations(and return later to his places of origin, which alters the ecosystems and the cycles of reproduction.

· Glaciers have turned into rivers and lakes that cause floods.· The drought causes an agricultural minor production that he carries to a food shortage.

· Owed wings floods increase the infectious and bacterial diseases.

These are only some of the effects, but there are many more, that though simpler, they are transcendent for the life in our planet it is for it that we must take action to reduce the emission ofcarbon that warm our atmosphere and put us in a vulnerable position as for the quality of our survival.
This warming produces aridity in the land concerning the agricultural activities and according to the investigators in a not very distant future there will be fused the enormous masses of ice of the poles, provoking an elevation of the levels of the sea, being in danger seriously thepossibility of life on the coasts.
A global significant warming of the atmosphere would have serious effects on the environment. It would accelerate the merger of the polar caps, would make raise the level of the seas, would change the regional climate and globally, would alter the natural vegetation and would concern the crops these changes, in turn, would have an enormous impact on the humancivilization. In the 20th century the everage temperature of the planet increased 0,6 ºC and the scientists foresee that the everage temperature of the Earth will rise between 1,4 and 5,8 ºC between 1990 and 2100.
Associated also with the use of fossil fuels, the acidificación owes to the emission of dioxide of sulphur and oxides of nitrogen for the thermal head offices and for the leaks of the vehiclesto engine. These products interact with the light of the Sol, the dampness and the oxidizers producing sulphuric and nitric acid, which they are transported by the atmospheric traffic and fall to land, dragged by the rain and the snow in the so called acid rain, or in the shape of dry warehouses, particles and atmospheric gases.
The acid rain is an important global problem. The acidity of somerainfalls in the north of The United States and Europe is equivalent to that of the vinegar. The acid rain corrodes the metals, spoils the buildings and monuments of stone, damages and kills the vegetation and acidifies lakes, currents of water and soils, especially in certain zones of the North-East of The United States and Europa's north. In these regions, the lacustrine acidificación has made dieto populations of fish. Today also it is a problem in the south-east of The United States and in the central zone of the north of Africa. The acid rain can retard also the growth of the forests; it associates to the decline from these to big altitudes both in The United States and in Europe.

The emission of pollutant gases, which provoke the global warming, causes devastationsin our planet.
Only a slight modification of temperature is enough in order that the delicate balance of the nature breaks.
Torrential rains, floods, hurricane-force winds, droughts, frozen heat waves: the climatic change affects his all equally.
Nevertheless, not all the countries contribute with the same proportion of pollution.
The immediate solutions carry big costs and sacrifices, and...
tracking img