标签:ecosystem 相关文章
Aral, Caspian Seas Remain Under Ecological Threat 咸海与里海仍旧处在恶劣的生态环境威胁之下 The Soviet Union was home to two of the world's largest inland bodies of water, the Aral
USAID recently launched two new projects -- the Business Ecosystem Project and Factoring Project -- that will support micro, small and medium enterprises access diversified sources of finance in Macedonia. The Business Ecosystem Project is a four-yea
The world's largest and most devastating 世上最大、最具破坏性的 environmental and industrial project 环境及工业计划 is situated in the heart 发生于 of the largest and most intact forest in the world, 世上最大、保存最完整的
And the Athabasca River drains downstream 阿萨帕斯卡尔河下游 to a range of Aboriginal communities. 即原住民聚集地 In Fort Chippewa, the 800 people there, 奇普怀恩堡有800位居民 are finding toxins in the food chain, 食物链中含
The Secret Life of Roots Plant roots are important to life on earth. Roots take in water and nutrients that the plant needs to live and grow. They also help secure plants in dirt to prevent erosion - the breakdown of soil by natural forces. Roots are
Big Bend National Park: A Texas Treasure 大本德国家公园:德克萨斯的宝藏 Today on our national parks journey, we head to the far western part of Texas. The landscape here is severe. The Chisos Mountains rise from the desert. The Rio Gra
雅思写作环保类重点词汇 1.vivisection活体解剖 2.perform. experiments on animals在动物身上做试验 3.test animals用于实验的动物 4.be subjected to experiments被迫接受试验 5.animal rights动物权利 6.clinical research临
Water is the source of life, a key factor in development and the essence of a harmonious ecosystem. With China's water environment deteriorating, and growing competition for water resources causing more disputes, both authorities and NGOs are realizi
This is Scientific American's 60-Second Science. Im Karen Hopkin. Itll just take a minute. When you think about an ecosystem, you usually think of the big animals that live there. The Serengetis ruled by lions. And estuaries are populated by fishes,
If you've ever driven up to a mountain pass, you know that the higher you climb, the colder it gets. But on clear, calm days, it can actually (be) colder in the valleys. That's because under high-pressure systems, cold air slides down mountain slopes
Part One 听辨练习 A. 词辨音 Listen, circle the corresponding number if you hear/?? /i/ in the word. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10 B. 短语辨音 Write down the words you hear on the tape, then
Moreton Bay, on the eastern coast of Australia, is always a rich and diverse ecosystem. Beds of sea grass stretch over miles, providing the foundation for fish, marine mammals and some truly ancient mariners(海员). Protected areas, like Moreton
Researchers working for the World Wildlife Fund have warned that the effects of climate change pose a serious threat to rare species of wildlife discovered within the past year in Southeast Asia, including a fanged frog and a leopard-striped gecko. A
Turkey has embarked on one of the biggest dam-building projects in the world. It aims to meet the growing energy demands of Turkey's booming economy. But the scale and speed of the project is causing concerns about the country's environment and arche
Before I talk about that, 谈到这之前 I've written down at the bottom there 我在底下标出了 the slope of this curve, this straight line. 这条曲线的斜率,即这条直线 It's three-quarters, roughly, 大约为3比4 which is less than
Some people think killing animals for food is cruel and unnecessary and some people think it is essential for daily diet. To what extent do you think about these two views? Before we examine the issue of whether killing animals for food is cruel and
BEIJING, April 19 (Xinhuanet) -- Almost one year after the disastrous(灾难性的 ) oil spill, scientists believe that the overall health of the Gulf of Mexico as nearly back to normal. However, the scientists restrain their optimism about natur
iBT阅读词汇题指的是从语言环境(简称语境)中理解词汇。语境在这里又称上下文。英语单词常常是一词多义,词汇题除了考察考生是否具备一定单词量以外,还测试考生在一定语境下准确理解词
如何看待养宠物 There is no denying the fact that keeping pets is a hotly debated topic today. Some people claim that keeping pets is a good thing to do. They believe that pets, like cats and dogs, can help relieve the loneliness suffered by se
What ate dinosaurs? 谁吃了恐龙 Old crocs 古鳄鱼 Even in their heyday, dinosaurs were not quite as dominant as popular myth makes them out to be 即便是在全盛时期,恐龙并非像民间传说所理解的那样占绝对统治地位 ONE