2013年12月15日星期日

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Some scientists through simulation experiments of evidence chronology, archeology, paleontology, ecology obtain verification believe that the extinction of Pleistocene fauna of large reason to come down to the common role of the human factors and climatic factors. burberry outlet Think if that humans began hunting activity and led to the extinction of some large fauna reason is too simple. In fact, there is evidence that over-hunting ( in the narrow sense ) is leading to the extinction of large fauna arguments do not apply to Western Europe, Siberia and Alaska, nor even available in Australia and Central America.

Recent data obtained show that human accelerated the extinction of large fauna. But at the same time,burberry sale, during the late Pleistocene human climate cheap ugg boots change played a role. Changes in the Earth's climate history, there are always kept in the ice age and interglacial periods alternating, for the earth change clothes, then the next ice age will come at what time? Due to massive release of carbon dioxide into the results that people the air, making the Earth appears unprecedented in the history of the state, so some scientists boldly predicted - ice age is probably never come back.

And Loutre,burberry outlet online, M. early as 30 years ago might have noticed the ice age will never come back. Alone on glacial interval between two ice ages of 10,000 years and make projections, this time interglacial has lasted nearly a million years, that the ice age is imminent ; But from another point of view, according to the Earth around caused by changes in the Earth 's orbit has a 125,000 -year climate change cycle projections, this time interglacial will continue as long as 70,000 years.

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