濒危动物英文简介
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濒危动物英文简介
濒危动物英文简介
濒危动物英文简介
濒危动物 Endangered species An endangered species is a population of an organism (usually a taxonomic species),which because it is either (a) few in number or (b) threatened by changing environmental or predation parameters,is at risk of becoming extinct.Many countries have laws offering special protection to these species or their habitats:for example,forbidding hunting,restricting land development or creating preserves.Only a few of the many endangered species actually make it to the lists and obtain legal protection.Many more species become extinct,or potentially will become extinct,without gaining public notice.The greatest factor of concern is the rate at which species are becoming extinct within the last 150 years.While species have evolved and become extinct on a regular basis for the last several hundred million years,the number of species becoming extinct since the Industrial Revolution has no precedent in biological history.If this rate of extinction continues,or accelerates as now seems to be the case,the number of species becoming extinct in the next decade could number in the millions[1].While most people readily relate to endangerment of large mammals or birdlife,some of the greatest ecological issues are the threats to stability of whole ecosystems if key species vanish at any level of the food chain.Species extinction is the ultimate concern,but there are four different reasons to have for concern with this outcome:Loss of a species as a biological entity; destabilization of an ecosystem; endangerment of other species; loss of irreplaceable genetic material and associated biochemicals.The loss of a species in and of itself is an important factor,both as diminution of the enjoyment of nature and as a moral issue for those who be
这是荡的,解释是我找的
The animal lives on the Qinghai-Tibetan Plateau(青藏高原) at altitudes(海拔) between 4,000 and 5,500 metres above sea level and can run at speeds of up to 100 kilometres per hour.
In th...
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这是荡的,解释是我找的
The animal lives on the Qinghai-Tibetan Plateau(青藏高原) at altitudes(海拔) between 4,000 and 5,500 metres above sea level and can run at speeds of up to 100 kilometres per hour.
In the 1980s and 1990s, some 20,000 Tibetan antelopes(羚羊) were killed by smugglers (走私者)because a shawl(围巾,披肩)made from their hair could fetch as much as US$30,000.
The Tibetan antelope is now protected by the government, and numbers 50,000 after dropping to as low as 15,000 in 1998. The campaign(运动,作战) to make it the Olympic mascot is believed will draw further attention to the animal's protection.
As home to the antelope, Qinghai Province in Northwest China is pulling out all the steps to get its candidate(候选人;候补者) selected. During the Labour Day holiday, supporters of the bid from 22 regions in China, including Hong Kong and Macao(澳门), gathered in the province to push for the animal's selection.
A song is currently being composed to bolster(援助) the antelope's chances of winning. "The spirit of the Tibetan antelope should be the spirit of people in Qinghai. The bid is also a good way to publicize the less developed province," said Provincial Governor(省长
) Song Xiuyan.
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