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[00:02.70]Unit 22 Environmental Protection Lesson 2 [00:08.46]Exercise 3 Listen to the lecture. [00:11.41]Use the Strategies to write some notes. [00:14.76]Today's lecture will focus on the serious issue [00:17.75]of endangered species. [00:19.90]By
Since the pre-historic times, man has had an urge to satisfy his needs. Be it hunger, shelter or search for a mate, he has always manipulated the circumstances to the best of his advantages. Probably this might be the reason why we human are the most
Ornithological trends 英国鸟类迁徙趋势 This bird has flown 有所改变 Why some species are thriving outside southern England 为什么英格兰南部有些物种开始兴盛? WHEN people talk about a north-south divide in Britain they are
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
Disputes and reorderings of much the same type can be found in all the other realms of the living, 同样的争吵,同样的重新分类,也发生在所有别的生物领域, so keeping an overall tally is not nearly as straightforward a matter