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Find the names of extinct species. Extinction age and species?
There are too many extinct animals on the earth. We only know a small part of the extinct dodo, which went extinct in 1799. Some people should know that there was a strange bird when we bypassed the Cape of Good Hope. That's the dodo. Fear of birds: 1800 completely extinct (see clearly, White-footed Australian groundhog: 1 extinct in the early 9th century/West African lion: 1865 extinct Atlas brown bear: 1870 extinct Antarctic wolf: 1875 extinct American Maine mink: 1880 extinct Jamaican hamster:/kloc. China langur of BBK extinct in 880: 66538+0883 extinct Australian bunny: 1890 extinct Queensland hairy-nosed wombat: 1900 extinct BBK user Christmas Island tiger-headed mouse: 19438+090 1 extinct southern California cat and fox: Sadly, this extinction is not a natural phenomenon, but a man-made result: human development has destroyed the natural habitat on which wild animals depend; Excessive use and consumption of wildlife products by human beings. As human beings push more and more wild species to the brink of extinction, the imbalance of natural environment becomes more and more serious, and the last loser can only be human beings themselves. Borrow a reasoning from biologist ehrlich and his wife: Take out the nail 12 on the wing, the wing may look intact, but when you start to pry 13, the real disaster may come soon. Just like our earth, some species are extinct and people turn a blind eye because the earth is still turning as usual, but when a major species is extinct, it will bring great disaster to the whole earth. We live under the same blue sky as all species, and it is everyone's responsibility to protect wild animals. As time goes by, we must ensure that everything we do will not pose a threat to the wild environment as before. Remember, once extinction happens, everything will be irreversible. What is "endangered species"? Endangered species refers to species that are endangered in all aspects or an important aspect. Facts about Endangered Species It is estimated that there are about140,000 to 10 billion species on the earth, and only170,000 species are known in the scientific community. Among the 1.7 million species, 5-20% of the animals and plants are endangered. In 2003, the IUCN Red List listed 12259 endangered species, which were divided into three categories: seriously endangered, endangered and vulnerable. At present, there are 762 species of animals and plants listed as extinct, and 58 species are only kept in captivity. Scientists have warned that a large number of species are going extinct on the earth. It is estimated that 150 to 200 species will disappear forever every 24 hours. Species extinction is a natural phenomenon. According to Darwin's theory, we can know that the development and disappearance of species is due to the fact that the process of natural selection has exceeded its background survival rate. According to the fossil record, the historical record of extinction of mammals and birds is that one species disappears every 500 to 1000 years. The extinction rate of species is faster than ever before, even if it is caused by comet collision (the last time a comet collision led to the extinction of dinosaurs was 6.5 million years ago). Now the rate of species extinction is 100 to 1000 times the normal rate. According to the World Natural Resources Association, the main cause of species extinction is the disappearance of habitats. Another factor of mass extinction is that the mode of production and consumption carried out by human beings does not support sustainable development. Every 20 minutes, an animal or plant will disappear from the earth. Many biologists believe that in 30 years, one fifth of the species living on the earth today will disappear. According to the current trend, 5,200 species of animals, including one in eight birds, are facing extinction. Another part of the concern is flowering plants and animals that depend on freshwater ecosystems, including mussels, crayfish, fish and amphibians. At the current rate of extinction, half of birds and mammals will disappear in 200 to 300 years. At least one of the eight cultivated species is endangered. In the next 30 years, almost a quarter of mammals will be in danger of extinction. In the past 30 years, the widely concerned black rhinoceros and Siberian tiger are most likely to disappear, as well as the less well-known Philippine eagle and Siberian leopard. According to the Red List of IUCN in 2003, there are 422 endangered species in China. This includes 8/kloc-0 species of mammals, 75 species of birds, 46 species of fish, 3/kloc-0 species of reptiles and 184 species of plants. According to the information provided by the International Union for Conservation of Nature and Natural Resources (IUCN), the most endangered species include Chinese alligator, Kogasawara fruit-eating bat, Brazilian plough ray, Philippine eagle, spotted hornbill and Yangtze sturgeon. The analysis of the red catalogue shows that more and more birds and mammals are listed in the seriously endangered and endangered catalogue, and they are further on the verge of extinction. In terms of animal species, three species have been extinct in China and disappeared in the wild 1 species. At present, there are still 29 species listed as seriously endangered, 69 species listed as endangered and 140 species listed as vulnerable. In terms of plant species, China recorded the extinction of two species and the disappearance of one species in the wild. At present, there are 34 species seriously endangered, 49 species endangered and 10 1 species vulnerable.
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