单词：biological species concept
单词：biological species concept 相关文章
SCIENCE IN THE NEWS - Everglades National Park One of the Worlds Great Biological Wonders STEVE EMBER: This is SCIENCE IN THE NEWS, in VOA Special English. Im Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus. This week, we tell about Everglades Natio
2011年VOA慢速英语(十)月
藻类Algae 两栖动物Amphibians 动物习性Animalbehaviour 动物资源Animalresources 节肢动物Arthropods 生物多样性Biologicaldiversity 生物资源Biologicalresources 生物圈保护区Bi
英文语法词汇
Planning IELTS essays and finding ideas This lesson looks at how planning better can help you write better essays. I focus in particular on ideas something that catches many candidates out. The two key points are that the ideas you need to write an I
雅思英语
Coincident with concerns about the accelerating loss of species and habitats has been a growing appreciation of the importance of biological diversity，the number of species in a particular ecosystem，to the health of the Earth and human well-being
托福英语
Yet there is surprisingly little agreement on how many phyla there are or ought to be. 然而，令人吃惊的是，在关于有多少门或诙有多少门的问题上，人们的看法大相径庭。 Most biologists fix the total at about thirty, b
万物简史
According to a document released at the conference by China's Ministry of Environmental Protection, the country has established over 2700 nature reserves covering a combined area of nearly 1.5 million square kilometers. That accounts for about 15 per
2016CRI中国国际广播电台