In flat(level) terms(ends) it is the increase of the environmental temperature - in the terrestrial bark and the oceans - provoked overcoat for the human activities. To this factor is added the climatic natural cyclical variability. In 1996 the International Panel on climatic Change integrated(repaid) by 2500 scientists of different countries, admitted that the change on the global climate is possible to detect it in many natural variables of the climate, since it is the temperature of the terrestrial surface, which increased 0.6 °C in the last century, or the emission(issues) of CO2 derivative of the burning of fossil fuels, which increase ascends to 6 250 000 million tons.The group of experts warned then, that if it(he,she) continues in an indiscriminate way the emission(issue) of greenhouse gases as the CO2, the terrestrial temperature might rise between(among) 1 and 3.5 °C, the most rapid index of last 100 000 years, which would impede the adjustment of the ecosystems of the world.
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