ARTICULO 1

El Cambio Climático es, un cambio en el clima atribuido al aumento de los

Gases de Efecto Invernadero(GEI), principalmente el Dióxido de Carbono

(CO2) que alteraron la composición de la atmósfera mundial y que se suma a la

variabilidad natural del Clima observada durante largos períodos de tiempo

comparables.

El cambio climático es una de las mayores preocupaciones de los científicos,

uno de ellos es Mark Lynes que dice que con 3 grados más tendremos

desaparición de los glaciares de Groenlandia y de algunas islas bajas, que el

amazona se secaría, que el ártico en verano estaría libre de hielo, y además

menciona que las temperaturas “Extremas” serían las normales.

El término, a veces se refiere específicamente al cambio climático causado por

la actividad humana, a diferencia de aquellos causados por procesos naturales

de la Tierra y el Sistema Solar.

ARTICULO 2

El cambio climático es definido como un cambio estable y durable en la

distribución de los patrones de clima en periodos de tiempo que van desde

décadas hasta millones de años. Pudiera ser un cambio en las condiciones

climáticas promedio o la distribución de eventos en torno a ese promedio (por

ejemplo más o menos eventos climáticos extremos). El cambio climático puede

estar limitado a una región específica, como puede abarcar toda la superficie

terrestre.

Los científicos mundiales han determinado que el aumento de la temperatura

debiera de limitarse a 2ºC para evitar daños irreversibles al planeta y los

consiguientes efectos desastrosos en la sociedad humana. Para lograr evitar

este cambio irreversible y sus efectos, las emisiones de gases invernaderos

debieran de alcanzar su máximo en el 2015 y disminuir progresivamente

después de esa fecha hasta alcanzar una disminución del 50% para el año

2050.

ARTICLE 3

Climate change is a reality that demands novel strategies that allow us to surpass the critical factors that put our existence in peril.The products based on cell cultures and vegetabletissues could be excellent alternatives to produce basic foods, assuring the food resource required in the future by Colombian people.

There is more CO2 in the atmosphere, the carbon dioxide is the principal and dominant taxpayer to the current climate change and his atmospheric concentration has increased from a value of 278 parts for million in the age preindustrial up to 393 ppm(parts for million) at present.

ARTICLE 4

The arcticserious one of the mas affected by the climate change.

A new investigation predicts that the increase of temperatures will drive to a massive increase of the vegetable coverage in the Arctic. In an article published on March 31 in Nature Climate Change, the scientists reveal new models who project that the wooded areas in the Arctic might increase even in 50 per cent during the near decades. The investigators also show that this problem will accelerate the global warming to a major pace of the awaited thing.

The growth of the plants in the ecosystems of the Arctic has increased in the last decades, a trend that coincides with the increase of the temperatures that it comes to almost the double of the global rate.

The scientists developed models who predict statistically the types of plants that can grow under certain temperatures and rainfalls. In spite of the fact that it includes uncertainty, this type of shaped is an effective way of studying the Arctic due to the fact that the hardness of the climate limits the variety of plants that can grow, for what this system is simpler to shape in comparison with other regions, as the tropics.

ARTICLE 5

To avoid the worst impact of the climate change we need a drastic and rapid reduction of the emission of greenhouse gases. The energetic sector is the major person in charge of the set of this emission, by this there is looked a change of energetic model in which the sources of dirty energies are replaced totally for renewable, saving and efficiency.

Colombia is especially vulnerable to the impacts of the climate change. Most of his population is in the high parts of the mountain chains, zones where there are foreseen problems of water shortage, and on his coasts, where the increase of the level of the sea can impress the human accessions and economic key activities for the country.

The climate change forces us to conceive the development of a different way since to reduce his risks is necessary to do deep and systemic changes that promote ways of life and of consumption more conscious that they happen for: the of the economy or the promotion of a development of low intensity in the consumption of carbon and a development more resilient that implies a more harmonic relation between the human activities and the territory.

BIBLIOGRAFIA:

http://www.pnud.org.co/sitio.shtml?apc=--1--&s=g&m=a&cmd%5B333%5D=i-333-3af48a226e7bb0eece38255cbc94a0e8#.UV6ofaI02d4

http://www.bogotahumana.gov.co/index.php/2012-01-04-20-46-15/2012-07-16-16-44-18/cambio-cimatico

http://cambioclimaticoglobal.com/ http://www.lasallista.edu.co/fxcul/media/pdf/RevistaLimpia/vol2n2/PL_V2N2_71-89-bioagricultura.pdf http://www.greenpeace.org/espana/es/Trabajamos-en/Frenar-el-cambio-climatico/ http://www.elmundo.es/traductor/