#头条创作挑战赛 #
This is a mammoth that appeared 5.3 million years ago, but such a huge mammoth suddenly went extinct, do you know why they went extinct?
Mammoths are a genus of mammoths in the family Elephantaceae, found mainly in northern Canada and Eurasia. They were covered with long black fine hair, with a nine-centimeter-thick fat layer in the skin, a skull shorter and taller than modern elephants, they had brown hair, they fed on grasses and legumes in summer, shrubs and bark in winter, and 6,000 years ago, as the sea level rose, the last mammoths came to Wrangel Island. With a suitable climate, plenty of food, and a heavenly life here, how did the mammoth become extinct?
There are two theories about this issue, the first is that people discovered their location thousands of years ago, when they were discovered, mammoths were extinct, according to experts, they found two mammoths where the mammoths lived, analyzed their genes and found that they lacked genetic diversity. Because the island was small at that time, their number was about 800, so there was a problem, for thousands of years, they inbred for a long time, resulting in various mutations in the newborn mammoths, so their chances of surviving were very low, which led to their extinction.
The second theory is that since mammoth ivory is valuable, there are many people. Crazy killing of mammoths at any cost, resulting in fewer and fewer mammoths, and finally because the reproductive rate of mammoths is very low, so it is slowly extinct, no matter what creatures on the earth are the survival of the fittest, this is the rule of nature, our profession can not be changed, as a civilized human being, we can only try to live peacefully with nature, so what do you think about this?