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Where did the mammoth appear?
Time：2017-5-11 10:17:34 Click：174
The United States "scientific public library genetics" journals published articles, US researchers described the long-haired mammoth before the extinction of the horrors: "They do not smell, do not love social, always indigestion, even a hard hair have become Shiny, it is difficult to keep out the cold ... ... "Studies have shown that the number of populations is too low, long hair mammals in the extinction of the former gene serious mutation, which caused a variety of diseases and further reduce their viability. According to the British Broadcasting Corporation reported that the long hair mammals "gene collapse" lesson shows that once the number of stocks as low as a certain level, the species of genetic health can not effectively carry out the process of natural selection and continued deterioration, can not be reversed. Natural selection, survival of the fittest.
Where did the mammoth appear?
Mammoth footprints almost traveled to the northern hemisphere in the northern hemisphere, Russia Siberia, Alaska, Europe, northern China, and now the eastern Russian Yakut Autonomous Republic is the main origin of high quality mammoth teeth.
Speaking of ivory, in addition to the well-known price, the back of each piece of ivory products always seems to have a lingering bloody color. With the increasing worldwide coverage of wild animals in recent years, as well as the international efforts to crack down on illegal ivory trade has increased year by day, the current market can see the ivory products have become less and less, but There is such an ivory products, are pure natural, there is not the proceeds of the killing, let alone become the only alternative to ivory.
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