单词：ecological subspecies
单词：ecological subspecies 相关文章
The plains zebra is a close relative of the quagga, extinct since 1883. But according to members of the Quagga Project in Cape Town, South Africa. The foal seen running with its herd of plains zebras is a quagga. His name's Harley and he was born in
自然百科2008年
The plains zebra is a close relative of the quagga, extinct since 1883. But according to members of the Quagga Project in Cape Town, South Africa. The foal seen running with its herd of plains zebras is a quagga. His name's Harley and he was born in
国家地理2008年
Broadcast: Mar 21, 2003 Britain's military chief says coalition forces have seized Iraq's key southern oil facilities, apparently averting what could have been a major ecological disaster. British mil
VOA2003（上）-科技先知
A report by a number of leading conservation groups warns that unless prompt corrective measures are taken, the planet is heading toward an ecological credit crunch. For VOA, Tom Rivers reports from London. Cover of the Living Planet Report The repo
VOA标准英语2008年（十月）
Ecological Footprint Africas ecological footprint is getting bigger. The continents growing population is placing greater demand on its natural resources. A new report calls on African nations to adopt a more sustainable approach to development to en
VOA标准英语2012年(六月)
What age would you like to live to? Many people often live to a ripe old age, but 'Lonesome George', a giant tortoise, was estimated to have been over 100 years old. This week his keeper of 40 years, Fausto Llerena, sadly found him dead in his enclos
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